Mr. Barretier returned, on the 28th of April, 1735, to Halle, where he
continued the remaining part of his life, of which it may not be
improper to give a more particular account.
At his settlement in the university, he determined to exert his
privileges as master of arts, and to read publick lectures to the
students; a design from which his father could not dissuade him,
though he did not approve it; so certainly do honours or preferments,
too soon conferred, infatuate the greatest capacities. He published an
invitation to three lectures; one critical on the book of Job, another
on astronomy, and a third upon ancient ecclesiastical history. But of
this employment he was soon made weary by the petulance of his
auditors, the fatigue which it occasioned, and the interruption of his
studies which it produced, and, therefore, in a fortnight, he desisted
wholly from his lectures, and never afterwards resumed them.
He then applied himself to the study of the law, almost against his
own inclination, which, however, he conquered so far as to become a
regular attendant on the lectures on that science, but spent all his
other time upon different studies.
The first year of his residence at Halle was spent upon natural
philosophy and mathematicks; and scarcely any author, ancient or
modern, that has treated on those parts of learning was neglected by
him, nor was he satisfied with the knowledge of what had been
discovered by others, but made new observations, and drew up immense
calculations for his own use.
He then returned to ecclesiastical history, and began to retouch his
Account of Heresies, which he had begun at Schwabach: on this occasion
he read the primitive writers with great accuracy, and formed a
project of regulating the chronology of those ages; which produced a
Chrono-logical Dissertation on the succession of the Bishops of Rome,
from St. Peter to Victor, printed in Latin at Utrecht, 1740.
He afterwards was wholly absorbed in application to polite literature,
and read not only a multitude of writers in the Greek and Latin, but
in the German, Dutch, French, Italian, English, and Arabick languages,
and, in the last year of his life, he was engrossed by the study of
inscriptions, medals, and antiquities of all nations.
In 1737 he resumed his design of finding a certain method of
discovering the longitude, which he imagined himself to have attained
by exact observations of the declination and inclination of the
needle, and sent to the academy of sciences, and to the Royal society
of London, at the same time, an account of his schemes; to which it
was first answered by the Royal society, that it appeared the same
with one which Mr. Whiston had laid before them; and afterwards by the
academy of sciences, that his method was but very little different
from one that had been proposed by M. de la Croix, and which was
ingenious, but ineffectual.
Mr. Barretier, finding his invention already in the possession of two
men eminent for mathematical knowledge, desisted from all inquiries
after the longitude, and engaged in an examination of the Egyptian
antiquities, which he proposed to free from their present obscurity,
by deciphering the hieroglyphicks, and explaining their astronomy; but
this design was interrupted by his death.
P. 384. _Confidence and tranquillity_.
Thus died Barretier, in the 20th year of his age, having given a proof
how much may be performed in so short a time by indefatigable
diligence. He was not only master of many languages, but skilled
almost in every science, and capable of distinguishing himself in
every profession, except that of physick, from which he had been
discouraged by remarking the diversity of opinions among those who had
been consulted concerning his own disorders.
His learning, however vast, had not depressed or overburdened his
natural faculties, for his genius always appeared predominant; and
when he inquired into the various opinions of the writers of all ages,
he reasoned and determined for himself, having a mind at once
comprehensive and delicate, active and attentive. He was able to
reason with the metaphysicians on the most abstruse questions, or to
enliven the most unpleasing subjects by the gaiety of his fancy. He
wrote with great elegance and dignity of style, and had the peculiar
felicity of readiness and facility in every thing that he undertook,
being able, without premeditation, to translate one language into
another. He was no imitator, but struck out new tracks, and formed
original systems. He had a quickness of apprehension, and firmness of
memory, which enabled him to read with incredible rapidity, and, at
the same time, to retain what he read, so as to be able to recollect
and apply it. He turned over volumes in an instant, and selected what
was useful for his purpose. He seldom made extracts, except of books
which he could not procure when he might want them a second time,
being always able to find in any author, with great expedition, what
he had once read. He read over, in one winter, twenty vast folios; and
the catalogue of books which he had borrowed, comprised forty-one
pages in quarto, the writing close, and the titles abridged. He was a
constant reader of literary journals.
With regard to common life he had some peculiarities. He could not
bear musick, and if he was ever engaged at play could not attend to
it. He neither loved wine nor entertainments, nor dancing, nor the
sports of the field, nor relieved his studies with any other diversion
than that of walking and conversation. He eat little flesh, and lived
almost wholly upon milk, tea, bread, fruits, and sweetmeats.
He had great vivacity in his imagination, and ardour in his desires,
which the easy method of his education had never repressed; he,
therefore, conversed among those who had gained his confidence with
great freedom, but his favourites were not numerous, and to others he
was always reserved and silent, without the least inclination to
discover his sentiments, or display his learning. He never fixed his
choice upon any employment, nor confined his views to any profession,
being desirous of nothing but knowledge, and entirely untainted with
avarice or ambition. He preserved himself always independent, and was
never known to be guilty of a lie. His constant application to
learning suppressed those passions which betray others of his age to
irregularities, and excluded all those temptations to which men are
exposed by idleness or common amusements.