532 



INTRODUCTION TO CYTOLOGY 



ZiRKLE, C. 1926. Amer. Jour. Bot. 13: 301-320, 321-341. illus. [Plastid.] 

 1927a. Amer. Jour. Bot. 14 : 429-445. illus. [Plastids.] 

 1928a. Protoplasma 4: 201-227. illus. [Fixation.] 

 19286. Bot. Gazette 86: 402-418. illus. [Nucleolus.] 

 1929a. Protoplasma 5: 511-534. illus. [Fixation.] 

 1929c. Bot. Gazette 88: 186-203. illus. [Plastid development.] 

 1931. Cytologia 2 : 85-105. illus. [Nucleolus.] 

 1932a. Zeitschr. Zellf. Mikr. Anat. 16 : 26-47. illus. [Vacuoles.] 

 19326. Jour Heredity 23 : 433-448. [Early hybridizers.] 

 1933. Protoplasma 18 : 90-111. See also 19 : 565-577; 20 : 16^-179. 



Zuelzer, M., and E. Philipp. 1925. Strahlentherapie 20: 787. 



ZuLUETA, A DE. 1925. Eos 1. [F-chromosome genes.] 



ZwEiBAUM. J., and A. Elkner. 1926. Bull. Histol. Appl. Phys. Path. 3: 218-221. 

 illus. [Golgi.] 



