469 Biologiâ generalis - Microscopium 



p. 41—45. [Uniform diet of Polytoma for 22 months (288 générations) 

 suppressed maies. Change to Chlamydomonas diet induced production of 

 male-producing daughters.] 

 202874 Zeleny, Charles, and fi. C* Faust. 577.8 

 1915. Size Dimorphism in the Spermatozoa from Single Testes. (Contr. 

 zool. Lab. Univ. 111. No. 36.) Jonrn. exper. Zool. Yol. 18 p. 187—240, 

 43 figg. [Présence of 2 size groups as basis for sex-determination.] — 

 Size Dimorphism in the Spermatozoa and Its Relation to the Chromo- 

 somes. (Amer. Soc. Zool.) Science N. S. Vol. 41 p. 441. 



578; 579 Microscopium; Conservation 



75 Zimmermann, C. 578 



1S02/06. Microscopia végétal. Broteria S. Fiel Vol. 1 p. 49—75, 8 figg. 

 — Vol. 2 p. 5—40, 1 Lâm., 9 figg. — Vol. 4 p. 137-152. — Vol. 5 p. 

 229-244, 2 Lâm. 



76 Evans, John W. 578 



1914. Micromillimeters and Micromicrons. Nature London Vol. 94 p, 

 34. [Définitions.] 



77 La Rue, George R. 5/8 



1914. Notes on Histology and Technic- Trans. Amer. micr. Soc. Yol. 

 33 p. 146—147. [Two new washing devices. New lens-carrier for labo- 

 ratory microscope. Improved arc lamp for projection.] 578.4,. 5, 61 



78 Pettigrew, Robert. 578 



1914. The Préparation of Objects for the Micro-Poiariseope, Trans. 

 Manchester micr. £oc. 1918 p. 71—72. 578.4,. 6 



202879 Bachmann, W. 578 



1915. Ueber Ultramikroskopie und kolloide Lösungen. Die Naturwissen- 

 schaften Jahrg. 3 p. 181-185, 191—195, 7 figg. 



80 Barnard, J. £.. 578 



1915. X' ra y s * n Relation to Microscopy. Journ. K. micr. Soc, London 

 1915 p* 1 — 7, 1 pl., 1 fig. [Radiograms of Foraminifera photographicaliy 

 enlarged. Direct microscopic observation of fluorescent screen.] 



81 Scheffer, >V. 578 



1915. Bemerkungen zur Beleuchtung mikroskopischer Objekte mit auf- 

 fallendem Licht für die Mikrophotographie mit kurzbrennweitigen pho- 

 tographischen Objektiven. Zeitschr. wiss, Mikr. Bd. 31 p. 373—379, 7 

 figg. — Zur Objektbeleuchtung für die Mikrophotographie mit kurzbrenn- 

 weitigen photographischen Objekten. Bd. 32 p. 60—68, 6 figg. 578.49,. 5 



82 van Walsem, O. C. 578 



1915. Der Arbeitsraum des Mikroskopikers. Zeitschr. wiss. Mikr, Bd. 

 32 p. 69-79, 4 figg. 



83 Wychgram, E. 578 



1915. Aus optischen und mechanischen Werkstätten. VIT. Zeitschr, 

 wiss. Mikr. Bd. 31 p. 441 — 447, 6 figg. [Tempax-Glas. ULBRicHx'sehe 

 Kugel. Chromochromator.] 578.2,. 4 



84 Singer, Charles. • 578.09 



1915. The Dawn of Microscopical Discovery. Journ. II. micr. Soc. Lon- 

 don 1915 p. 317-340, 16 figg. 



2C2885 Souza-Brandâo, V. 578.1 

 1914. Sur le microscope universel, un nouveau modèle de microscope 

 minéralogique. Comm. Serv. geol. Portugal T. 10 p. 22- -77, 2 pis., 5 

 figg. ... 



