PROCEEDINGS OF THE CLUB 43 



Germination of the oospere results in the formation of an aplanospore or biflagellate zoospore. 

 Either product undergoes successive divisions to form a young colony which inverts to 

 form a juvenile colony. This gives rise asexually to normal Volvox colonies. Mitotic 

 division is of the type generally found among the protista. A resting nucleus of a cell 

 in a developing* daughter colony contains a large Feulgen positive endosome, a smaller 

 Fuelgen negative plasmosome and a linin reticulum with chromatic granules scattered 

 through it. In prophase the plasmosome disappears and endosomal division results in the 

 formation of two polar endosomal masses which undergo chemical changes while being 

 extruded through the nuclear membrane into the cytoplasm. Intranuclear endosomal 

 masses are Feulgen positive whereas after extrusion they are Feulgen negative. It is sug- 

 gested that there is a flow or nucleic acids from nucleus to cytoplasm wherein the desoxyri- 

 bose nucleic acid derived from the endosome becomes converted to cytoplasmic ribonucleic 

 acid. In metaphase the chromosomes are tiny and closely associated and the endosomal 

 masses have almost completely disappeared. The anaphases occur quickly and in telophase 

 aggregation of chromatic material results in the reformation of the endosome ; in addition 

 the plasmosome reappears. Mitosis is intranuclear. Cytokinesis is achieved by constric- 

 tion of the protoplast between the daughter nuclei. 



A revision of the section Merrillosphaera of the genus Volvox is suggested in which 

 the species V. mononae Smith is abandoned and V. Migida (Shaw) Printz is incorporated 

 within another species. It is also suggested that the section Campbellosphaera be aban- 

 doned and the form Campbellosphaera obversa be named Volvox Carteri var. homothalli- 

 cus. 



The interest of the audience was attested by the animated discussion which 

 took place upon the conclusion of Mr. Metzner's presentation. The meeting 

 adjourned at 4 :50 p.m. 



Respectfully submitted, 



Edwin B. Matzke 

 Corresponding Secretary 



Minutes of the Meeting of May 2, 1944 



The meeting, which was held at Hunter College, was called to order at 

 8:15 p.m. by President Levine. There were 80 members and guests present. 

 The minutes of the preceding meeting were approved as read. 



Dr. Matzke was asked to read the following communication from the 

 Committee on the C. Stuart Gager Memorial of the Brooklyn Institute of 

 Arts and Sciences : 



Last August, in the death of Dr. C. Stuart Gager, the world lost an eminent scientist, 

 the Brooklyn Botanic Garden a great curator and administrator, and all who love horti- 

 culture a staunch and loyal friend. 



The Brooklyn Botanic Garden has become a place of great interest largely through his 

 vision and continued efforts, carried on over a period of thirty-three years. Its beauty is 

 a constant source of delight to thousands of visitors each year. The adult classes in 

 gardening, the lectures on horticulture, the instruction given to children, have blazed a 

 new trail in botanic activities and the lives of many people have been broadened and en- 

 riched by the program which Dr. Gager conceived, organized and administered. 



