WORKS REFERRED TO IN THE TEXT. 



(This is not a general bibliography of the subject, but only a list of 

 the works to which reference is made. Where there is general reference 

 to a large series of investigations by a particular author, as a rule only 

 one reference is given, to some important contribution; from which the 

 reader can follow up the subject if he desires. This is done particularly 

 when the subject lies to one side of our main field.) 



Ackert, J. E., 1916. On the effect of selection in Paramecium. Ge- 

 netics, 1:387-405. A gar, W. E., 1914. Experiments on inheritance in 

 parthenogenesis. Phil. Trans. Roy. Soc., London, 205 B: 421-489. 



Baitsell, G. A., 1912. Experiments on the reproduction of the Hypo- 

 trichous Infusoria. I. Conjugation between closely related individuals 

 of Stylonychia pustulata. Jour. Exper. Zool., 13 : 47-77. Id., 1914. Ex- 

 periments on the reproduction of the Hypotrichous Infusoria. II. A 

 study of the so-called life cycle in Oxytricha fallax and Pleurotricha 

 lanceolata. Jour. Exper. Zool., 16: 211-235. Balbiani, E. G., 1881-1882. 

 Les Protozoaires. Journ. de Microg., T. 5 et 6. (Cited from Butschli, 

 1880.) Barber, M. A., 190T. On heredity in certain micro-organisms. 

 Kansas Univ. Sci. Bui., 4 (1); 1-47. Bateson, W., 1914. The Address 

 of the President of the British Association for the Advancement of 

 Science. Science, 40:287-302, 319-333. Blakeslee, A. F., 1904. Sexual 

 reproduction in the Mucorineae. Proc. Amer. Acad., 40:205-319. Id., 

 1913. Conjugation in the heterogamic genus Zygorhynchus. Mycolog. 

 Centralbl., 2: 241-244. Bott, K., 1907. Ueber die Fortpflanzung von 

 Pelomyxa palustris, nebst Mitteilungen iiber ihren Bau. Arch. f. Protis- 

 tenkunde, 8: 120-158. Bridges, C. B., 1916. Non-disjunction as proof of 

 the chromosome theory of heredity. Genetics, 1:1-52, 107-163. Brown- 

 Stquard, C. E., 1869. Nouvelles recherches sur 1'fipilepsie due a certaines 

 lesions de la moelle piniere et des nerfs rachidiens. Arch. Physiol. 

 Norm. Path., 2:211-220, 422-437, 496-503. Butschli, O., 1875. Vor- 

 laufige Mittheilung einiger Resultate von Studien iiber die Conjuga- 

 tion der Infusorien und die Zelltheilung. Zeitschr. f. wiss. Zool., 

 25:426-441. Id., 1880-82. Protozoa. Bronn's Klassen und Ordnungen 

 des Thierreichs, Bd. 1. 2035 pp. 



Calkins, O. N., 1902. Studies on the life-history of Protozoa. I. The 

 life-cycle of Paramoecium caudatum. Arch. f. Entw.-Mech., 15:139- 

 186. Id., 1902a. Studies on the life-history of Protozoa. III. The six 

 hundred and twentieth generation of Paramoecium caudatum. Biol. Bui., 

 3: 192-205. Id., 1904. Studies on the life-history of Protozoa. IV. Death 

 of the A series. Conclusions. Jour. Exp. Zool., 1 : 423-461. Id., 1906. 

 The Protozoan life cycle. Biol. Bui., 11: 229-244. Id., 1911. Regenera- 

 tion and cell division in Uronychia. Jour. Exper. Zool., 10:95-116. Id., 

 1915. Cycles and rhythms and the problem of "immortality" in Para- 

 mecium. Amer. Nat., 49:65-76. Id., 1915a. Didinium nasutum. I. The 

 life history. Jour. Exper. Zool., 19 : 225-241. Id., 1916. General biology 



224 



