Biolûgia goner, - Microsc. ; Conserv. 464 



61561 Kinar, Heleu Dean. 577.8 

 1912. Studies on sex-determination io Amphibiaos. V. The effects of 

 changing the water content of the egg, at or befoie the time of fertili- 

 zatioD, on the sex ratio of Bufo lentiginosus. Jonrn. exper. Zoöl. Yoî. 

 12 p. 319—336. [Sex appears not to dépend exclusiveiy on Spermato- 

 zoon but to be determined by egg or by egg and sperm.] 



62 Morgan, T. H. 577.8 



1912. Is the change in the sex-ratio of the frog that is afîected by ex- 

 ternal agents, due to partial f ertilization ? Amer. Natural. Vol. 46 p. 108 

 —109. 



63 Morgan, T. H. 577.8 



1912. The élimination of the sex chromosomes from the male-produc- 

 ing eggs of Phylloxerans. Journ. exper. Zoöl. Vol. 12 p. 479—498, 

 4 figg. 



64 Schöner, Otto. 577.8 



1912. Die praktische Vorausbestimmung des Geschlechts beim Menschen. 

 Zentralbl. öynäkol. Jahrg. 36 p. 234—235. [Geschlecht präformiert ; 

 Alternation der Ovarien.] 



65 ShuU, A. Franklin. 577.8 



1912. Studies in the life cycle of HydaUna senta. III. Internal factors 

 influencing the proportion of male-producers. Jouru. exper. Zool. Vol. 

 12 p. 283—317, 6 figg. [Decrease (also in size of family) aftßr long con- 

 tinued parthenogenesis in some lines. Individuais from fertiiized eggs 

 are all female-producers. Sex determined one génération in advance.] 



577.8 



1912. Some récent Work on Sex. ßep. Bist Meet. Brit. Ass. Adv. Sc. 

 p. 414—415. [Excessive production of yolk or fatty matter in blood in- 

 duces female sex. Withdrawal of fat from Inachus by SaccuUnrt gives 

 impetus to fat metabolism. Experiments on hens.] 



III. 578; 579 Microscopium ; Conservatio. 



67 Barnard, J. E. 578 



1909. The Microscope. Its practical Applications. Scient. Ainer. Suppl. 

 Vol. 68 p. 291. 



68 . . . 578 



1910. The Microscope and the Scientist. Some Applications of Micros- 

 copy to Modern Science. Scient. Amer. Suppl. Vol. 69 p. 350—352, 



69 Brocher, Frank. 578 



1911. Le travail au microscope et l'accommodation. L'œil, le micro- 

 scope, la chambre-claire et l'observateur. Rev. méd. Snîsse romande Ann. 

 31 p. 665-672, 2 figg. b78.2,.4,.6 



70 Gaston, Paul. 578 



1911. L'ultra-microscope et sa technique. Biologica Paris Ann. 1 p. 253 

 -256, 16 figg. 



71 Mariuesco, 0. 578 



1911. L'ultramicroscope comme méthode d'investigation du système 

 nerveux a l'état normal et pathologique. C. R. Soc. Biol. Paris T. 71 

 p. 669—671. 



72 . . . 578 



1912. A Double Demonstrating Eye-piece. Knowledge Vol. 35 p. 275, 

 2 figg. 578.2,.4 



73 Loeser, Rudolf. 578 



1912. Schülermikroskope und Hilfsapparate. Monatsh. nat. ünterr. Bd. 

 5 p. 264-273, 24 figg. 578.1,.4 

 61574 Daufresne, Alexandre. 578.1 

 1911. Un nouveau microscope d'enseignement. Cosmos Paris T. 64 p. 

 B98-400, 3 figg. 



15. VIL 1912. 



