A SKETCH OF HIS LIFE 51 



Scientific Laboratories: An address delivered at the dedication of the biological 

 laboratory. Bulletin Western Reserve University, October, 1899, 20 pp. 

 (Reprinted in Bull. Johns Hopkins University, vol. 10, no. 104, November, 

 1899.) 



Truth and error. Science, vol. 9, no. 213, January 27, 1899, pp. 121-126. _ 



1900 



The lesson of the life of Huxley. Smithsonian Report, 1900, pp. 701-711. 

 Review of "Marriages of the Deaf in America, by E. A. Fay, Volta Bureau, Wash- 

 ington, D. C., 1898." Pop. Sci. Monthly, January, 1900. 



1902 

 Is scientific naturalism fatalism? Proc. American Philos. Soc., vol. 41, 1902. 



The intellectual conditions for the science of embryology. Science, new series, 

 vol. 15, nos. 377 and 378, 1902, pp. 444-454, pp. 489^92. 



1903 



On a new genus of hydroid jellyfishes, Dichotoma. Proc. American Philos. Soc., 

 vol. 42, 1903, 3 pp. 1 pi. (Read April 4, 1902). 



1905 



The oyster. A popular summary of a scientific study. (2d ed. revised.) John 

 Hopkins University Press, 1905, 225 pp., 16 pis. 



1906 



Heredity and variation, logical and biological. Proc. American Philos. Soc., 



1908, 7 pp. (Read April 20, 1906). 

 The affinities of the pelagic tunicates, No. 1 : On a new Pyrosoma. Mem. National 



Acad. Sci., vol. 10, 1906, 5 pp. 2 pis. 

 Dipleurosoma a new genus of Pyrosoma. Johns Hopkins University Circulars, 



1906, no. 5, pp. 98-99, 2 cuts. 



Evolution. Article in the "Reference Hand book of the Medical Sciences," 1906, 

 pp. 733-736. 



1907 



Joseph Leidy. Pop. Sci. Monthly, April, 1907. 



Joseph Leidy. Pioneers of American Science. American Museum of Natural 



History, New York, April, 1907, pp. 23-25; also in Anatomical Record, No. 5, 



January 1, 1907. 

 On Turritopsis nutricula (McCrady). Proc. Boston Soc. Nat. Hist., vol. 33, no. 8, 



1907, pp. 429-460, pis. 30-35. (With Samuel Rittenhouse.) 



