o4 REPORT—1899. 
On the conclusion of his Address, the Chairman, in answer to a question 
as to the best way of catching the well shrimp, replied that it was best to 
wait till the well was almost empty, and then to let down a bucket and 
withdraw it as quickly as possible, lest the creatures, being scared, should 
have time to get away. Sometimes well shrimps were brought up when 
pumping was going on. 
Rey. J. O. Bevan said that he had visited the Mammoth Cave of 
Kentucky, where he saw a great many bats which had apparently passed 
the whole of their lives within the cavern. 
The Chairman felt inclined to agree with the late Mr. Cordeaux, who 
had stated that in many caverns bats and birds alternated—the birds 
going out when the day came and the bats going in. It was, however, a 
matter of opinion. 
Mr. T. Workman had never seen birds in the Mammoth Cave of Ken- 
tucky, though he had caught bats there by day, and he thought they lived 
in the cave only in the daytime. They were not found in the depths of 
the cave, though they were in great numbers near the mouth. He asked 
the Chairman if the eyeless fishes found in caves belonged to any special 
species ; also if the wells mentioned in connection with well shrimps 
were open wells ? 
The Chairman replied that all the blind species were special. There 
was a blind fish in caverns in Cuba. He included wells of all kinds. All 
along the south of England, in Dublin, and, he believed, in Jersey, there 
were records of these amphipods. Four species of well shrimps could be 
obtained, and he thought that if England were searched more thoroughly 
a greater number of species would be found. 
Mr. Hotblack thought that there was no evidence then existing of 
bats which spent all their time in caverns. Consequently they should 
not be classed as subterranean fauna. A member of the Society he repre- 
sented not long ago brought to one of their meetings a well shrimp 
obtained at Norwich. All would probably agree with him in believing 
that these well shrimps did not get into a well from its mouth, but from 
underground water percolating into the well. 
Mr. Mark Stirrup said that some few years ago a society was started 
in Yorkshire for cavern exploration, with which the search for subter- 
ranean fauna might well be combined. The subject appeared to have 
attracted more attention in America than in England, perhaps because 
the underground waters in the great caverns of America had been more 
productive. The Chairman doubtless wished the delegates to bring the 
subject before the Societies they represented. He had certainly opened 
out for them a new field of research. 
The Chairman remarked that two gentlemen had written to him on 
this subject, Mr. E. 8. Goodrich, of ‘the Department of Comparative 
Anatomy, Oxford, who would be glad to liave any specimens of blind 
crustacea from wells and caves for experimental purposes, and Dr. Charles 
Chilton (to whose work on the underground fauna of New Zealand he 
had referred in his paper), who was living in Edinburgh. Dr. Chilton 
was collecting particulars of the English well amphipods, and would be 
glad of specimens. 
Mr. Hotblack asked whether either of the gentlemen mentioned would 
name specimens and return them. 
The Chairman thought that they would be only too glad to do it. 
Mr. William Gray expressed the hope that in the Report of the Con- 
