SOME OBSERVATIONS ON ACINETARIA. 351 
Some Observations on Acinetaria. 
By 
Cc. H. Martin, B.A., 
Demonstrator in Zoology at Glasgow University. 
With Plates VII and VIII. 
Part I.—The ‘‘Tinctin-korper”’ of Acinetaria and the Conjuga- 
tion of Acineta papillifera. 
ConrtveENTS. 
PAGE 
I. Introductory. 5 , : . 851 
Il. The “'Tinctin-korper” of Acinetaria, with some Obser- 
vations upon the Nuclear Changes of Tokophrya 
elongata : : : . 3852 
III. Reproduction and Conjugation of Acineta papillifera 357 
IV. Conclusions. : : : . 375 
V. Literature : ; : : . 376 
I. Inrropucrory. 
The observations described in this paper were begun on a 
culture of Tokophrya elongata, which was given to me 
at Munich by Professor Hertwig in the summer semester of 
1902. This culture was followed for a period of about six 
months, when it was unfortunately lost, but as during this 
time I had never seen any indication of conjugation, I thought 
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