REFERENCES. 



A long list of references would be inappropriate in this work. 

 The following short list may be of value to those wishing further 

 reading upon the topics treated in the foregoing pages : 



PROTOPLASM AND CELLS. 



BERTHOLD. " Studien ttber Protoplasma mechanik," Leipzig, 1887. 



NELSON, JULIUS. "Heredity and Sex," American Naturalist, 1887. 



PASTEUR, L. " Studies on Fermentation," Macmillan & Co., 1879. 



SCHWARZ. " Morphological and Chemical Composition of Proto- 

 plasm," Zeitr. z. BioL d. Pflanzen, v. 1887. 



WEISSMAN. " Essays upon Heredity and Kindred Biological 

 Problems," Clarendon Press, 1889. 



WHITMAN, C. O. " Seat of Formative and Regenerative Energy," 

 American Jour, of Morphology, 1 888. 



LIFE. 



BASTIAN, CH. " The Beginnings of Life," D. Appleton & Co., 1872. 

 " The Modes of Origin of Lowest Organisms," Macmillan 

 & Co., 1871. 



BEALE, SIR LIONEL. "The Mystery of Life," J. & A. Churchill, 

 1871. "Protoplasm; or, Matter and Life," Lindsay & Blakis- 

 ton, 1874. 



DRYSDALE. " Protoplasmic Theory of Life," Balliere, Tyndall & Co. 



HUXLEY, TH. " The Physical Basis of Life," Humboldt Library; 

 originally delivered as a lecture in 1868. " Anatomy of Inver- 

 tebrates," D. Appleton & Co., 1878. Article on Biology 

 in Encyclo. Britannica. "Animal Automatism," Fortnightly 

 Review, 1874. 



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