Botany and Zoology. 329 
native hemoglobin.” Specimens of Anthea placed in the sunlight 
cent; while with animals containing the alga, as above shown, 
the amount of oxygen in the gas evolved is less than this and in 
all the trials except those with species of Ceriactis, much less. 
Mr. Geddes named the alga Philozoon, and distinguished four 
species, P. radiolarum, P. siphonophorum, P. actinarum, P. 
The green bodies were obtained free by crushing the animals 
hat the green bodies are independent unicellular organisms to 
classed with algze and he describes t s Zoochlorell 
one species, Z. conductrix, occurrin : nd Z. parasitica 
in Spongilla. He includes the yellow cells of the Radiolariv, 
Hydr nd Acting in a new genus Zooxanthella. The green 
bodies obtained free by crushing Hydra and Spongilla did not 
die but continued to live for weeks slides, and when exposed 
