See Note 64

Footnote 64:

The Charter of Privileges, granted and solemnly confirmed to the

freemen of Pennsylvania and territories belonging to the province, by

the proprietary, on the 28th of October, 1701, was, after being

approved and agreed to by the legislative body of the province,

accepted by them the same day; in lieu of the Frame of Government

originally stipulated between Mr. Penn and the Planters, in the year

1683. The first article of this charter provided for a full enjoyment

of the Liberty of Conscience, by all persons who should acknowledge

“One Almighty God, the Creator, Upholder, and Ruler of the World.” It

also declared to be capable of holding any office or place, under the

government, all persons professing faith in “Jesus Christ, the Saviour

of the World,” and who should, when required, attest their allegiance,

&c.

Footnote 65:

Incorporated with that edition of the _Laws of Pennsylvania_, which

was published in the year 1810, “under the authority of the

legislature,” with Notes and References, by Charles Smith, Esq. is an

article that bears a respectful testimony to the justice and clemency

of the founder of that state: It is an important and very interesting

_Note_ to an act of assembly passed the 1st day of April, 1784,

(entitled, “An act for opening the Land-Office, for granting and

disposing of the unappropriated Lands within this State,”) containing

“a connected view of the land-titles of Pennsylvania from its first

settlement to the present time.” In this document the learned editor

speaks of the integrity and virtuous policy manifested by Penn, with

respect to his conduct towards the Indian natives of the country, to

which he had acquired the dominion under his sovereign, in these

terms.

“William Penn, although clothed with powers as full and comprehensive

as those possesed by the adventurers from Portugal and Spain, was

influenced by a purer morality and sounder policy. His religious

principles did not permit him to wrest the soil, by force, from the

people to whom God and nature gave it, nor to establish his title in

blood; but, under the shade of the lofty trees of the forest, his

right was fixed by treaties with the natives, and sanctified, as it

were, by incense smoking from the calumet of peace.”

The note from which this extract is made, (and which comprizes 156

large 8vo. pages, printed on a small type,) forms a valuable treatise,

historical as well as legal, of the territorial rights of the former

proprietaries, and of the land-titles deduced from them by the

citizens of Pennsylvania.

-----

Matthias, the youngest son of Nicholas Rittenhouse, by Wilhelmina Dewees

his wife, was born at the paper-mills belonging to his family, near

Germantown,[66] in the county of Philadelphia and about eight miles from

the capital of Pennsylvania, in the year 1703. Having abandoned the

occupation of a paper-maker, when about twenty-nine years of age, and

two years after his father’s death, he then commenced the business of a

farmer, on a piece of land he had purchased in the township of

Norriton,[67] about twenty miles from the city of Philadelphia; his

brother Henry establishing himself in the same manner, in the adjoining

township of Worcester. In October, 1727,—about three years prior to

Matthias’s removal from the vicinity of Germantown,—he had become a

married man. His wife was Elizabeth William (or Williams) who was born

in 1704, and was daughter of Evan William, a native of Wales. Her

father, a farmer, dying while she was a child, she was placed under the

charge of an elderly English (or, more probably, Welsh) gentleman, in

the neighbourhood, of the name of Richard Jones; a relation of her

family. That truly respectable woman possessed a cheerful temper, with a

mind uncommonly vigorous and comprehensive: but her education was much

neglected, as is too often the fate of orphan children. Yet, perhaps, no

censure ought justly to be imputable to Mr. Jones, in this case; because

there were very few schools of any kind, in country situations, at that

early day.[68]

-----

Footnote 66:

Germantown was settled in the year 1682. It was so called by its

founders, a small colony of Germans from the Palatinate, mostly from

the vicinity of the city of Worms, who are said to have been converted

while in their own country, to the principles of the people called

Quakers, by the preaching of William Ames, an Englishman. Germantown

is now a populous village, of considerable extent; and by reason of

its proximity to the capital, this place furnishes an agreeable

residence to many respectable families from thence. See also Note 62.

Footnote 67:

This township derives its name (which it gave also to Mr.

Rittenhouse’s patrimonial farm and his original observatory,) as does

likewise the neighbouring town of Norriston, the county-town of the

(now) county of Montgomery, from the respectable Pennsylvania family

of Norris; of which Isaac Norris, Esq. was eighteen times chosen

Speaker of the General Assembly of Pennsylvania, during the term of

half a century from the time of his first election, in the year 1713.

Mr. Norris held many public offices in Pennsylvania with great

reputation and honour. He is represented as having been “an ornament

to his country;” and this gentleman, who died in the year 1735, then

held the Chief-Justiceship of the Province.

Footnote 68:

In the year 1683, Enoch Flower undertook to teach English in the town

of Philadelphia. Six years afterwards, originated the Friends’ Public

School in the same town, then in its infancy; and in 1697, this school

was incorporated, on the petition of Samuel Carpenter, Edward Shippen,

Anthony Morris, James Fox, David Lloyd, William Southby, and John

Jones, in behalf of themselves and others. In the year 1708, this

corporation was enlarged and perpetuated by a new charter, under the

name of “The Overseers of the Public School, founded in Philadelphia,

at the request, cost, and charges of the people called Quakers.” It

was further extended in the year 1711; when the three first named

gentlemen, together with Griffith Owen, Thomas Story, Richard Hill,

Isaac Norris, Samuel Preston, Jonathan Dickinson, Nathan Stanbury,

Thomas Masters, Nicholas Waln, Caleb Pusey, Rowland Ellis and James

Logan, were appointed Overseers.

As this was the earliest considerable school established in

Pennsylvania, as well as the first institution of the kind, in the

province, the names of its promoters deserve to be held in

remembrance, among the Patrons of learning and useful knowledge in

this country.

From this view of the origin of schools in the capital of

Pennsylvania, it will be perceived, that the means of acquiring even

the rudiments of literary instruction must have been difficult of

access in country places, for some considerable time after the periods

just mentioned. This is one of the most serious grievances to which

the settlers in new and unimproved countries are subjected.

-----

The extraordinary natural understanding of this person, so very nearly

related as she was to the subject of these memoirs, seemed to the writer

to merit particular notice; and the more especially, for a reason which

shall be hereafter mentioned.

By this wife, Matthias Rittenhouse had four sons and six daughters;[69]

three of whom died in their minority. The three eldest of the children

were born at the place of their father’s nativity; the others, at

Norriton. Of the former number was DAVID, the eldest son, the subject of

these memoirs.—He was born on the 8th day of April, 1732.[70]

-----

Footnote 69:

Margaret, who intermarried with Edward Morgan; Esther, with the Rev.

Thomas Barton; David, the subject of these Memoirs; Andrew, who died

in his minority; Anne, who intermarried with George Shoemaker;

Eleanor, who intermarried with Daniel Evans; Benjamin, yet living;

Jonathan, who died in his minority; and Mary and Elizabeth (twins,) of

whom the latter died in her minority, unmarried: Mary, who is living,

has been twice married, but without issue; her first husband was

Thomas Morgan. David had no sons; and two of his three brothers having

died young and unmarried, the only persons, descended from our

philosopher’s father, Matthias, who now bear the name of Rittenhouse,

are the surviving brother of David, namely, Benjamin, and his sons.

Benjamin has been twice married; first, to a daughter of General John

Bull; and, secondly, to a daughter of Colonel Francis Wade: By both

marriages he has male issue; and, as it is believed, two of the sons

by the first wife are married.

Footnote 70:

“There is,” says a late ingenious writer,[70a] “a strong propensity in

the human mind to trace up our ancestry to as high and as remote a

source as possible.” “This principle of our nature,” he observes,

“although liable to great perversion; and frequently the source of

well-founded ridicule, may, if rightly directed, become the parent of

great actions. The origin and progress of individuals, of families,

and of nations, constitute Biography and History, two of the most

interesting departments of human knowledge.”

The pride of ancestry is, indeed, “liable to great perversion,” and is

too frequently “the source of well-founded ridicule:” yet the

experience and the history of mankind, in every age and country, have

shewn, that it is connected with and derived from principles of our

nature, which are not only laudable in themselves, but such as, if

“rightly directed” and properly applied, become eminently useful to

society.

Footnote 70a:

See a “Discourse delivered before the New-York Historical Society, at

their anniversary meeting, December the 6th, 1811: By the Hon. De Witt

Clinton, one of the Vice-Presidents of the Society.”

-----

This son was an infant, when his family removed to Norriton and engaged

in the business of farming; and his father appears, early, to have

designed him for this most useful and very respectable employment.

Accordingly, as soon as the boy arrived at a sufficient age to assist in

conducting the affairs of the farm, he was occupied as an husbandman.

This kind of occupation seems to have commenced at a very early period

of his life; for it is ascertained, that, about the fourteenth year of

his age, he was actually employed in ploughing his father’s fields.[71]

-----

Footnote 71:

It is not this occupation that, in itself, usually attaches to those

who follow it, the idea of clownishness: but it is the ignorance that,

unfortunately, too generally characterizes persons employed in it,

which, by an association of ideas, is apt to derogate from the

worthiness of the employment itself. If the profession of husbandry be

an honourable one, and every rational consideration renders it such,

then one of the most important operations in conducting the great

business of the agriculturist, cannot be destitute of dignity. To

follow the plough is not a servile labour: it is an employment worthy

of a freeman; and if the person, thus engaged, be a man of native

talents, aided by some improvement of mind, scarcely any occupation

can afford him greater scope for philosophic reflection.

While, therefore, the reader contemplates the celebrated Rittenhouse,

such as he was in his maturer years; and then takes a retrospective

view of the embryo-philosopher in the period of his youth, directing

the plough on his father’s freehold; let it be recollected, that the

sovereigns of a mighty empire, in the Eastern world, occasionally

guide this truly important machine with their own hands, in honour of

agriculture: let him recal to his mind, that, in the proudest days of

the Roman republic, consuls, dictators, senators, and generals, were

not unfrequently called forth from the actual occupancy of this

implement of husbandry, by the voice of their country; and, seizing

either the civil or the military helm of its government, with hands

indurated by the toils of the peaceful field, have by the wisdom of

their counsel, or by their valour, supported the tottering fabric of

the state and saved the commonwealth: let them remember, in fine,

that—

“In ancient times, the sacred plough employ’d

The kings and awful fathers of mankind;”[71a]

and that WASHINGTON, himself, the pride and boast of his age as well

as country, disdained not to engage himself, personally, in

agricultural pursuits.

Footnote 71a:

Thomson’s Spring.

-----

At that period of our future Philosopher’s life, early as it was, his

uncultivated mind, naturally teeming with the most prolific germs of yet

unexpanded science, began to unfold those buds of genius, which soon

after attained that wonderful luxuriance of growth by which the

usefulness and splendour of his talents became eminently conspicuous.

His brother Benjamin relates,[72] that, while David was thus employed at

the plough, from the age of fourteen years and for some time after, he

(this informant,) then a young boy, was frequently sent to call him to

his meals; at which times he repeatedly observed, that not only the

fences at the head of many of the furrows, but even his plough and its

handles, were covered over with chalked numerical figures, &c.[73]—Hence

it is evident, that the exuberance of a sublime native genius and of

almost unbounded intellectual powers, unaided by any artificial means of

excitement, were enabled, by dint of their own energy, to burst through

those restraints which the corporeal employments of his youth

necessarily imposed upon them.

-----

Footnote 72:

This gentleman was commissioned by Governor Mifflin, in the year 1791,

to be one of the associate judges of the court of common pleas, in and

for the county of Montgomery: but his tenure of this office was

afterwards vacated, by his removal to Philadelphia.

Footnote 73:

“Astronomy,” says Mr. B. Rittenhouse, in the letter before referred

to, “appeared at a very early day to be his favourite study; but he

also applied himself industriously to the study of opticks, the

mechanical powers,” &c.

-----

During that portion of his life in which this youthful philosopher

pursued the ordinary occupations of a husbandman, which continued until

about the eighteenth year of his age, as well as in his earlier youth,

he appeared to have inherited from healthful parents a sound

constitution, and to have enjoyed good health.

It was at this period, or rather about the seventeenth year of his age,

that he made a wooden clock, of very ingenious workmanship: and soon

after, he constructed one of the same materials that compose the common

four-and-twenty hour clock, and upon the same principles. But he had

exhibited much earlier proofs of his mechanical genius, by making, when

only seven or eight years old, a complete water-mill in miniature.

Mr. Rittenhouse’s father was a very respectable man: he possessed a good

understanding, united to a most benevolent heart and great simplicity of

manners. The writer long knew him; and, from his early acquaintance with

the character, the appearance, and the habits of this worthy sire of an

illustrious son, he had long supposed him to have been inclined to the

religious principles of the society called Friends, although he had been

bred a Baptist:—but a circumstance which shall be noticed hereafter,

will evince the liberality of this good man’s opinions, in the

all-important concern of religion. Yet, with truly estimable qualities,

both of the head and heart, old Mr. Rittenhouse had no claims to what is

termed genius; and therefore did not, probably, duly appreciate the

early specimens of that talent, which appeared so conspicuous in his son

David. Hence, he was for some time opposed to the young man’s earnest

desire to renounce agricultural employments; for the purpose of devoting

himself, altogether, to philosophical pursuits, in connexion with some

such mechanical profession as might best comport with useful objects of

natural philosophy, and be most likely, at the same time, to afford him

the means of a comfortable subsistence. At length, however, the father

yielded his own inclinations, in order to gratify what was manifestly

the irresistible impulse of his son’s genius: he supplied him with money

to purchase, in Philadelphia, such tools as were more immediately

necessary for commencing the clock-making business, which the son then

adopted as his profession.

About the same time, young Mr. Rittenhouse erected on the side of a

public road, and on his father’s land in the township of Norriton, a

small but commodious work-shop; and, after having made many implements

of the trade with his own hands, to supply the deficiency of many such

as were wanting in his purchased stock, he set out in good earnest as a

clock and mathematical instrument maker.

From the age of eighteen or nineteen to twenty-five, Mr. Rittenhouse

applied himself unremittingly, both to his trade and his studies.

Employed throughout the day in his attention to the former, he devoted

much of his nights to the latter. Indeed he deprived himself of the

necessary hours of rest; for it was his almost invariable practice to

sit up, at his books, until midnight, sometimes much later.

It was in this interval and by these means, that our young philosopher

impaired his constitution, and contracted a pain in his breast; or

rather, as he himself described that malady to the writer, “a constant

heat in the pit of the stomach, affecting a space not exceeding the size

of half a guinea, attended at times with much pain;” a sensation from

which he was never exempt, during the remainder of his life. About this

time, he retired from all business, and passed several weeks at the

Yellow Springs, distant but a few miles from his place of residence. He

there bathed and drank the waters; and from the use of this chalybeate,

he appeared to have derived some benefit to his general health, though

it afforded little alleviation of the pain in his breast.

A due regard to the sacredness of historic truth demands, that some

circumstances which occurred while Mr. Rittenhouse was yet a youth, and

_one_ which it is believed had a very considerable influence on his

subsequent pursuits and reputation, should now be made known. Because

the writer of these memoirs conceives he ought not to be restrained, by

motives which would appear to him to arise from a mistaken delicacy,

from introducing into his work such notices of his own father, long

since deceased, as do justice to his memory; while they also serve to

elucidate the biographical history of Mr. Rittenhouse.

In the year 1751, when David Rittenhouse was about nineteen years of

age, THOMAS BARTON, who was two years elder than David, opened a school

in the neighbourhood of Mr. Matthias Rittenhouse. It was while Mr.

Barton continued in that place, supposed to have been about a year and a

half, that he became acquainted with the Rittenhouse Family; an

acquaintance which soon ripened into a warm friendship for young Mr.

Rittenhouse, and a more tender attachment to his sister, Esther.

Two years afterwards (in 1753), the personal attractions and fine

understanding of the sister rendered her the wife of Mr. Barton; who,

for some time before, had officiated as one of the tutors in the then

recently-established Academy, afterwards College, of Philadelphia; now

the University of Pennsylvania. In this station, he continued until the

autumn of 1754; when he embarked for England, for the purpose of

receiving episcopal ordination in the church, and returned to

Pennsylvania in the early part of the following year.

The very intimate connexion thus formed between Mr. Barton and a sister

of Mr. Rittenhouse (who was two years elder than this brother),

strengthened the bands of friendship which had so early united these

young men: a friendship affectionate and sincere, and one which never

ceased until Mr. Barton’s death, nearly thirty years afterwards;

notwithstanding some difference of political opinions had arisen between

these brothers-in-law, in the latter part of that period, in consequence

of the declaration of the American independence.

Mr. Barton was a native of Ireland, descended from an English family; of

which, either two or three brothers settled in that kingdom, during the

disastrous times in the interregnum of Charles I. Having obtained very

considerable grants of land in Ireland, this family possessed ample

estates in their then adopted country. Hence, flattering prospects of an

establishment there, in respect to fortune, were held out to their

descendants. Through one of those untoward circumstances, however, by

means of which the most unexpected revolutions in the affairs of

families and individuals have been sometimes produced, the expectations

of an independent patrimony which our Mr. Barton’s father had

entertained, were speedily dissipated. Nevertheless, this gentleman, who

was the eldest son of his family, was instructed in the rudiments of a

classical education in the vicinity of his family residence in the

county of Monaghan, under the direction of the Rev. Mr. Folds, a

respectable English clergyman; and at a suitable age, he was sent to the

university of Dublin, where he finished his academical education.

Entirely destitute of fortune, but possessing a strong intellect, stored

with useful and ornamental learning as well as an ardent and

enterprizing spirit, this young adventurer arrived in Philadelphia soon

after he had completed his scholastic studies.

The writer’s principal design, in presenting to the public view these

slight sketches of the early history of the late Rev. Mr. Barton, shall

be now explained.

When Mr. Rittenhouse’s father established his residence at Norriton, and

during the minority of the son, there were no schools in the vicinity at

which any thing more was taught, than reading and writing in the English

language and the simplest rules of arithmetic. Young Mr. Rittenhouse’s

school-education, in his early youth, was therefore necessarily bounded

by these scanty limits of accessible instruction: He was, in truth,

_taught_ nothing beyond these very circumscribed bounds of literary

knowledge, prior to the nineteenth year of his age; though it is

certain, that some years before that period of his life, he began to be

known—at least in his own neighbourhood—as a mathematician and

astronomer, in consequence of his cultivation of the transcendent genius

with which heaven had endued him.

Under such circumstances as these, the familiar intercourse between

David Rittenhouse and his young friend Barton, which commenced when the

age of the former did not exceed nineteen years, could not fail to prove

highly advantageous to the mental improvement of both. The one possessed

a sublime native genius; which, however, was yet but very imperfectly

cultivated, for want of the indispensable means of extending the bounds

of natural knowledge: the other had enjoyed the use of those means, in

an eminent degree, and thus justly acquired the reputation of a man of

learning. A reciprocation of these different advantages, as may be well

supposed, greatly promoted the intellectual improvement of both.

It will be readily conceived, that Mr. Barton’s knowledge of books must

have rendered even his conversation instructive to Mr. Rittenhouse, at

so early a period of his life. But the former so greatly admired the

natural powers of his young friend’s mind, that he took a delight in

obtaining for him access to such philosophical works, and other useful

books, as he was then enabled to procure for his use; besides directing,

as far as he was capable, the course of his studies.

After Mr. Barton’s removal to Philadelphia and while he resided in that

city, his means of furnishing his friend with books, suitable for his

instruction, were greatly enlarged; an advantage of which he most

assiduously availed himself: and it is supposed to have been about this

time, that a small circulating library was established in Norriton, at

the instance of Mr. Barton, zealously seconded by the co-operation and

influence of Mr. Rittenhouse.

Finally, when Mr. Barton returned from England, in the year 1755—at

which time Mr. Rittenhouse was yet but twenty-three years of age, he

brought with him a valuable addition to his friend’s little library;

consisting, in part, of books which he himself had commissioned Mr.

Barton to purchase for him.[74]

-----

Footnote 74:

The zeal and attention with which our young philosopher pursued his

early studies, and such mechanical objects as are more intimately

connected with those branches of natural philosophy to which he was

most devoted, will appear from the following extract of a letter,

addressed by him to Mr. Barton, on the 20th of September, 1756, being

then little more than twenty-four years of age; viz. “I have not

health for a soldier,” (the country was then engaged in war,) “and as

I have no expectation of serving my country in that way, I am spending

my time in the old trifling manner, and am so taken with optics, that

I do not know whether, if the enemy should invade this part of the

country, as Archimedes was slain while making geometrical figures on

the sand, so I should die making a telescope.”

-----

No doubt can be entertained, that Mr. Rittenhouse derived the great and

extraordinary faculties of his mind from nature; and it is equally

evident, that for some years after he arrived to manhood, he possessed

very slender means of improving his natural talents: Nay further, it is

well known to those who were long personally acquainted with him, that

after his removal to Philadelphia, when he was eight-and-thirty years of

age, a period of life at which the place of his residence, and the

condition of his pecuniary affairs, united in placing within his reach

much that is dear to science,—even then, his long continued professional

employment and the various public stations he filled, in addition to

frequent ill health, deprived him of a large share of those advantages.

The vast stock of knowledge which, under such untoward circumstances, he

actually acquired, is therefore an additional proof of his native

strength of intellect.

But, wonderful as a kind of intuitive knowledge he possessed really was,

his mental powers would probably have remained hidden from the world,

they would have been very imperfectly cultivated, at best, had not an

incident apparently trivial, and which occurred when our Astronomer was

a young boy, furnished what was, in all probability, the very first

incitement to an active employment of his philosophical as well as

mechanical genius.

Mr. Rittenhouse’s mother having been already noticed somewhat

particularly, the reason for this being done shall be here stated: it is

connected with the incident just now referred to. This valuable woman

had two brothers, David and Lewis Williams (or William), both of whom

died in their minority. David, the elder of these, pursued the trade of

a carpenter, or joiner. Though, like his nephew and namesake, he was

almost wholly an uneducated youth, he also, like him, early discovered

an unusual genius and strength of mind. After the death of this young

man, on opening a chest containing the implements of his trade which was

deposited at Mr. M. Rittenhouse’s, (in whose family it is presumed he

dwelt,) a few elementary books, treating of arithmetic and geometry,

were found in it: With these, there were also various calculations and

other papers, in manuscript; all, the productions of David Williams

himself, and such as indicated not only an uncommon genius, but an

active spirit of philosophical research. To this humble yet valuable

coffer of his deceased uncle, Mr. Rittenhouse had free access, while yet

a very young boy. He often spoke of this acquisition as a treasure;

inasmuch as the instruments of his uncle’s calling afforded him some

means of exercising the bent of his genius towards mechanism, while the

books and manuscripts early led his mind to those congenial pursuits in

mathematical and astronomical science, which Were ever after the

favourite objects of his studies.[75]

-----

Footnote 75:

It is observable, that, in like manner, an accidental circumstance

seems to have given the first impulse to the philosophical researches

of that eminent mathematician, Colin Maclaurin, the friend and

disciple of Newton. His biographer, Mr. Murdoch, relates, that “his

genius for mathematical learning discovered itself so early as at

twelve years of age; when, having accidentally met with a copy of

Euclid in a friend’s chamber, in a few days he became master of the

first six books, without any assistance: and thence, following his

natural bent, made such a surprising progress, that very soon after we

find him engaged in the most curious and difficult problems.”

It is not ascertained at what age Rittenhouse obtained access to his

uncle Williams’s little collection of books and papers; though it was,

probably, before his twelfth year. But it is to be observed, that at

the early age of twelve, Maclaurin had been a year at the University

of Glasgow, where he was placed under the care of one of the most

eminent and learned professors of the age; while Rittenhouse, for some

years after that period of life, had his time occupied in agricultural

pursuits, and was almost entirely uneducated.

One particular in which similar merit attaches itself to these two

distinguished philosophers, is, that all their more serious studies

were directed towards objects of general utility.

Having introduced the name of Maclaurin more than once into these

Memoirs, the author of them cannot refrain from presenting to his

readers the following epitaph upon that great mathematician. It is

attributed to the late Dr. Johnson: the delicacy and chasteness of the

sentiment, as well as the classical purity of the language, certainly

render it a specimen of this species of composition worthy of the pen

of that justly-admired writer.—

H. L. P. E.

Non ut nomine paterno consulat;

Nam tali auxilio nil eget;

Sed, ut in hoc infelici campo,

Ubi luctus regnant et pavor,

Mortalibus prorsus non absit solatium:

Hujus enim scripta evolve,

Mentemque tantarum rerum capacem,

Corpori caduco superstitem crede.

---

The writer of the _Adversaria_, in a respectable periodical

publication,[75a] observes, that “it would not be easy to do justice

to this elegant and nervous sentence, in English.” But, as he has

given a very good prose translation of it into our language, the

subjoined versification of this was attempted by a young lady, at the

request of the writer of these memoirs:—

Not to perpetuate his father’s praise,

For no such aid his lofty fame requir’d,

Did filial piety the marble raise;

But other thoughts the friendly deed inspir’d.

Here, in this tearful vale, where sorrow dwells

And trembling mortals own the reign of fear,

At his command, the sculptur’d tablet tells,

Where hope exists, to dry the wand’rer’s tear.

For, read his works, O man! and then believe,

The mind that grasp’d at systems so sublime,

Beyond the mortal part must ever live,

And bloom, in sacred heav’n’s ethereal clime.

Footnote 75a:

The Port-Folio.

-----

It being thus apparent, that not only Mr. Rittenhouse’s mother but her

brother David Williams were persons of uncommon intellectual powers, the

writer thinks it fairly presumable, that our Astronomer inherited his

genius from his mother’s family.[76] His surviving brother has decidedly

expressed this opinion: in a letter on the subject of the deceased,

addressed to the writer of these memoirs soon after Dr. Rittenhouse’s

death, he says—“I am convinced his genius was more derived from his

mother, than from his father.”

-----

Footnote 76:

In order to gratify the curiosity, if not to remove the doubts, of

such persons as are not disposed to believe in the reality of any

thing like an hereditary power, bias, or propensity of the mind, the

following memorable instances are selected from many others which

might be adduced; to shew that mental faculties, as well as corporeal

qualities and even mental and bodily diseases, are sometimes inherited

by children from their parents: perhaps cases of this kind exist more

frequently than is either observed or imagined.

Mr. James Gregory, the inventor of the reflecting telescope in common

use, called the Gregorian, was one of the most distinguished

mathematicians of the seventeenth century. This eminent man, who was

born at Aberdeen in Scotland in the year 1638, was a son of the Rev.

Mr. John Gregory, minister of Drumoak in the same county: his mother

was, moreover, a daughter of Mr. David Anderson, of Finzaugh, a

gentleman who possessed a singular turn for mathematical pursuits.

Mr. David Gregory, a nephew of the foregoing, was some time Savilian

professor of astronomy at Oxford. This _Subtilissimi Ingenii

Mathematicus_, as he is styled by his successor Dr. Smith, was born at

Aberdeen, in the year 1661. Of the four sons of this celebrated

mathematician,—

David, a mathematician, was regius professor of modern history, at

Oxford;

Memoirs of the life of David Rittenhouse, LLD. F.R.S., late president of the American Philosophical Society, &c. · 第 26 / 68 题