NOTICES OF NEW BOOKS. 199 



siderable size in the large end. Connecting the two organisms 

 (which I shall call for convenience the " macrozooid " and " micro- 

 zooid ") was a band of protoplasm, which could be seen to be in 

 actual continuity with the transparent non-granular cortical layer in 

 both. The microzooid was clothed in short cilia, which were in 

 brisk action ; curiously enough, there was no trace of any differentia- 

 tion into setas or cirri, the arrangement being entirely holotrichous. 

 The two organisms were kept under close observation, and in about 

 ten minutes' time the connecting band of protoplasm was gradually 

 lengthening and becoming narrower, the microzooid at the same 

 time making convulsive jerks, as though to break away from its 

 parent. In about five minutes more the process was completed ; 

 the now thread-like band parted in the middle, the ends shrivelling 

 up, and the microzooid swam rapidly away. I kept it under obser- 

 vation for some time ; it swam about broad end foremost, and very 

 quickly. I did not see it ingest any food, nor alter in shape or size. 

 In about twenty minutes after the completion of division I was 

 obliged to leave the microscope, so I cannot say what finally became 

 of it. The macrozooid also was alive at the end of the twenty 

 minutes, and was seen to ingest food. For such an extraordinary 

 method of reproduction I can give no reason. I have mentioned 

 that the macrozooid looked unhealthy ; is it possible that it was in 

 some way diseased, and unable to effect complete division ? (Here 

 I may mention that it appears common for Stylonychias to break 

 into irregular fragments, some of which may continue to live for 

 some time, and possibly even regenerate ; anterior portions are most 

 frequently seen.) — R. D. Gbeenaway. 



NOTICES OF NEW BOOKS, Etc, 



A Veteran Naturalist. By E. W. Richardson. London : Witherby 

 & Co. 1916. 10s. net. 

 Both the author and the publishers of this excellent biography 

 of the late W. B. Tegetmeier may fairly claim to be considered public 

 benefactors for putting on record the virile, upright, active life of this 

 fine old naturalist, who died only recently, in 1912, after completing 

 his ninety-sixth year. One of the many well-chosen and interesting 

 illustrations depicts him as we remember him — a small-built, fragile- 

 looking, white-haired old man, whose vivid interest in natural history 



