Four Books on Human Proportion

Now, regarding the first vertical line of the man in profile, I will first indicate the thicknesses on all the horizontal lines The "thickness" here refers to the depth of the body from front to back when viewed from the side. that are drawn through the length of the limbs.

First, at the very top of the head, on the closest line under the crown, I make the head thick through the back vertex original: "dick durch den hindern wirbel" one 9th part.
Across the forehead, one 14th part and one 15th part.
Across the eyebrows, one 7th part.
Across the nose, one 8th part.
Across the chin and neck, also one 8th part.
And the neck below the chin and jaw, I make it one 12th part thick.
Across the pit of the throat original: "halsgrüblein"; the suprasternal notch at the base of the neck., one 9th part.
At the height of the chest, two 13th parts.
At the armpits original: "ochssen", one 6th part.
Across the nipples original: "tütlen", one 6th part.
Below the breasts, one 12th part and one 13th part.
In the flanks original: "weychen"; the soft area of the waist., one 12th part and one 13th part.
At the hip joint, one 6th part.
At the end of the hip, across the belly and buttocks, one 11th part and one 12th part.
At the groin original: "scham" of the man, also one 11th part and one 12th part.
And I make the leg below the buttocks one 7th part thick.
But below that, in the middle of the upper leg, one 14th part and one 15th part.
Above the knee, one 10th part.
In the middle of the knee, one 12th part.
Below the knee, also one 12th part.
In the middle of the calf, where it is thickest, one 20th part and one 21st part.
At the end of the inner calf, one 13th part.
Below, above the instep of the foot where the leg is thinnest, one 18th part.
And I make the foot one 6th part long.

Thereafter, I make the thicknesses of the side-view arm: at the shoulder original: "achssel", two 21st parts.
But below the armpit, one 13th part.
At the elbow, one 18th part.
In front of the elbow, in the strongest part of the arm, also one 18th part.
And at the hand, one 22nd part.
And I make the hollow of the hand one 30th part thick.

And in the drawing, I wish to place the arms

beside the figures, separately, so that such things do not cause confusion.

Next, I will set down the widths of the parts on all the horizontal lines relative to the lengths of the limbs, following the other vertical line of the man in front view.

I make the man’s head, on the line of the back vertex, one 10th part wide.
Across the forehead, one 8th part.
Across the eyebrows, one 9th part.
Across the ears, one 8th part.
Across the nose, one 10th part.
And the neck below the chin is one 12th part wide.
Between the shoulder joints at the height of the pit of the throat, one 5th part.
Across the chest, three 10th parts.
Between the armpits, one 5th part.
Between the nipples, two 15th parts.
In the flanks, one 5th part.
At the hip joint, one 9th part and two 19th parts.
At the end of the hip, one 4th part.
And on this line, the legs stand one 6th part wide apart from each other at the hips.
At the groin, also one 4th part.
But the leg at the end of the buttocks, two 17th parts.
At the indentation of the leg original: "einpeisung"; the inward curve of the inner thigh., one 10th part.

This indentation is to be noted on the inner side of the legs in the front-view figure.

Thereafter, I make the leg above the knee one 12th part wide.
In the middle of the knee, one 14th part.
Below the knee, two 26th parts.
In the middle of the calf, one 22nd part and one 24th part.
At the end of the inner calf, one 14th part.