Portraits of Mathematicians, Part II.
No. 103. 12 portraits on American plate paper, $3.00 net.
No. 103a. 12 portraits on Japanese vellum, $5.00 net.
Single portraits, American plate paper, 35c net.
Single portraits, Japanese vellum, 50c net.
Portraits of Mathematicians, High School Portfolio.
Eight portraits selected from the two preceding portfolios.
No. 104. 8 portraits on American plate paper, $2.00 net.
No. 104a. 8 portraits on Japanese vellum, $3.50 net.
Single portraits, American plate paper, 35c net.
Single portraits, Japanese vellum, 50c net.
For Purchasers who may prefer not to frame the Portraits, a neat Portfolio can be supplied at an extra cost of $1.00.
FOOTNOTES
[1] Part I, pp. 253-256.
[2] Contributions to the Theory of Natural Selection, p. 47.
[3] So far as we shall be concerned with them throughout this treatise, the "Lamarckian factors" consist in the supposed transmission of acquired characters, whether the latter be due to the direct influence of external conditions of life on the one hand, or to the inherited effects of use and disuse on the other. For the phrase "inherited effects of use and disuse," I shall frequently employ the term "use-inheritance," which has been coined by Mr. Platt Ball as a more convenient expression.