PROCEEDINGS OF THE SOCIETY. 
421 
In tlio Oribatidro a medium course seemed to hold good, it being very 
difficult to ascertain where they ontered the hind-gut, and were found in 
the rectum, whilst in the Trombidiidao they seemed to enter in a definito 
channel down the centre of the back. His very decided opinion was 
that it was not a continually changing road but was a fixed and definito 
process which remained through all stages. It was clear that they wero 
by no means at the end of the investigation, and it seemed also necessary 
to take into account the fact that fresh specimens did not give the same 
results as those which had been acted upon by reagents, because it 
seemed certain that the reagents acted upon them in a way which 
caused them to be thrown down as crystals earlier than they would 
have been in the natural course. The whole subject was obviously one 
of great interest. The breaking loose of very large cells in the interior 
of the ventriculus was a very common thing amongst the Acarina, and 
also a very conspicuous thing. His own observation showed that they 
did pass out from the anus, where the food was abundant, but at present 
he did not see any sufficient evidence that they passed through the 
tissues and became blood-corpuscles. Mr. Bernard had opened up a 
very interesting and important subject which it was to bo hoped he 
would be able to follow out. 
Mr. F. Chapman read a paper ‘ On the Foraminifera of the Gault of 
Folkestone,’ in continuation of the series of papers on the subject already 
read before the Society. 
Prof. Bell said he had been asked why some extra copies of 
Mr. Chapman’s previous papers had not been printed, so as to publish 
the whole series together as a separate work. The reason was that the 
editors of Societies’ publications were not unaccustomed to receive 
promises of series of papers, and they were usually presented with 
Part I., sometimes they received Part II., but scarcely ever Part III., 
and Part IV. was almost unprecedented. He wished they had known 
that with regard to the present series they had to deal with so patient a 
worker as Mr. Chapman had proved himself to be ; he was certainly to 
be congratulated upon what he had already accomplished. 
The President was sure that every one would appreciate the amount 
of patient labour which Mr. Chapman had devoted to this subject, one 
which possessed special difficulties, because there was no group of 
organisms where species more ran one into the other than was the case 
amongst the Foraminifera. 
Prof. D’Arcy Thompson’s paper c On a Taenia from an Echidna ’ was 
read by Prof. Bell ( ante , p. 297). 
Mr. C. Haughton Gill called attention to two specimens of pure 
cultivations of diatoms which he was exhibiting under Microscopes in 
the room, which he thought might be of interest. 
The thanks of the Society were voted to the authors of papers and 
other communications which had been brought before the meeting. 
