CHAPTER XIV.

_PAUL FEELS THE NECESSITY OF IMPROVING HIMSELF IN THE ART OF DRAWING._

One thing astonished Paul,—the facility with which his cousin could

express with a few strokes of his pencil what he wished to explain.

His perspective sketches, above all, seemed to him marvellous; and

our young architect began, on his part, to try to indicate on paper

the forms he wished to master; but, to his great disappointment,

he succeeded only in producing a mere medley of lines which was

incomprehensible, even to himself, a quarter of an hour afterwards. Yet

in drawing out his memoranda, to which his cousin attached importance,

he could not but feel that the means employed by his chief would be

very useful to him if he could acquire them.

One day, therefore, after having spent several hours at the works in

endeavouring to get a clear idea, by sketching them, of the form of

some worked stones, but without succeeding in obtaining a result even

tolerably satisfactory, Paul went to his cousin’s study, and said to

him—

“What I have learned of linear drawing is evidently not enough to

enable me to render on paper the forms which you are able to explain so

readily by a sketch; I beg you therefore, cousin, to teach me how to

set about representing clearly what I have before me, or what I wish to

explain.”

“I like to see you so anxious to learn, Paul; indeed, this is half the

battle, though only the half, and in fact the easier one. I shall not

be able to teach you in eight days, nor even in six months, the art

of drawing with facility either the objects you see, or those which

you conceive in your brain; but I will give you the method you must

follow; and with labour,—much labour and time,—you will arrive, if not

at perfection, at least at clearness and precision. Drawing implies

not mere seeing, but considering an object. All who are not blind,

see; but how many are there who _know how to see_, or who in seeing

reflect? Very few, certainly; because we are not habituated to this

exercise from childhood. All the higher orders of animals see as we do,

since their eyes are very similar to ours; they have even the memory

associated with vision, as they recognize the objects or the beings

which they like or dread or of which they make their prey. But I do not

think that animals acquire a notion of bodies or surfaces otherwise

than by an instinctive faculty without the intervention of what we call

reasoning. Many of our fellow-men do not see in any other way; but it

is their fault, since they could reason. But that is not the question

now. The following is the method I propose to you:

[Illustration: FIG. 37.]

“You know what triangles and squares are; you have studied elementary

geometry, and you seem to me to be tolerably familiar with it, since

you could evidently understand the plans, the sections, and even the

projections of bodies on a vertical or horizontal plane; or else my

sketches would not have been intelligible to you. I should wish you

therefore to take some cards, and drawing to a scale on each of them

the various faces of a stone you see worked, you will cut out these

surfaces with scissors, and with the help of strips of paper and paste

you will join them, so as to represent one or two of these pieces of

stone. The little model will thus become familiar to you; you will

know how the surfaces are joined, and what are the angles they form.

In the evening, by lamp-light, you will place these little models

before you in every possible position, and copy them as they present

themselves to your eyes, taking care to indicate by a dotted line the

junction lines of the surfaces which you do not see. Stay,—here on my

table is a rhombohedron of wood, which, as you know and see, presents

six similar and equal faces whose sides are equal, each of these faces

consisting of two equilateral triangles united at their base. See (Fig.

37), I take this body between my fingers by its two vertices; if I

show it to you in such a position that one of its faces is parallel to

the plane of vision, the two others will present themselves obliquely

(as at A); you see three faces therefore, but there are three others

behind that are hidden from you. How would these present themselves

if this body were transparent? Just as indicated by the dotted lines.

If I make the rhombohedron revolve between my fingers, so that two

faces are perpendicular to the plane of vision, (as at B), two faces

only will continue visible, two others will be hidden from me, and two

follow the two lines _a b_, _c d_. Now, I present the rhombohedron so

that none of its faces are parallel or perpendicular to the plane

of vision,—thus (_vide_ C.) Well, I shall still see three faces, but

foreshortened—thrown out of shape by perspective; and the three others

will be indicated by the dotted lines. In the evenings, therefore, make

as many little models as you can, representing the stones you have seen

at the works, and copy these little models in every position. Throw

them at random on the table, several together, and copy what you see;

mark what is hidden from you by a dotted or finer line. When you have

practised this for a week, many difficulties will have been already

conquered. And then for further advance.”

[Illustration: FIG. 38.]

This method pleased Paul very much, and, without losing time, with the

help of some of his memoranda, he began to construct a little model

of one of the stones whose faces he had measured. It was the springer

of an arch with a return face. He succeeded in making a tolerably

good model in card-board, which he proudly displayed on the family

table after dinner, and which he copied first on its under-bed, then

as placed in various positions. He would have continued his work all

night, so much was he fascinated with it, and so many interesting

discoveries did it enable him to make, if at eleven o’clock Madame

de Gandelau had not warned him that it was time to go to bed. Paul

had some trouble in getting to sleep, and his dreams presented to him

nothing but card-board models of a very complicated description, which

he endeavoured unsuccessfully to put together. So he got up rather

late, and on entering his cousin’s room, did not fail to attribute his

tardy appearance to the bad night he had passed.

“Well,” said Eugène, “you have got the descriptive geometry fever;

so much the better; it cannot be learned well unless you have a

passion for it. We will work at it together when the frost suspends

our building operations and the bad weather shuts us up here. An

architect must be able to use descriptive geometry, as we spell

correctly,—without having to think about it. Perspective must be

absolutely familiar to him. Neither can be learned too soon; and it is

only in early youth that these things can be acquired so thoroughly as

to give us no trouble at any time to recall them, even if we should

live a hundred years. You are a good swimmer; and if you fall into the

water you have no need to remind yourself what movements you must make

to keep at the surface or direct your course: well, it is in this way

you ought to know geometry and perspective; only you must give a little

more time to practising this essential branch of our art than is

required for learning to swim like a frog.”

[Illustration: FIG. 39.—PLANS AND SECTION OF THE PRINCIPAL STAIRS.]

How to build a house · 第 14 / 28 章