IN MEMORIAM : THOMAS TATE, F.G.S. 
351 
tributed to the ' Naturalist ' an excellent paper on the organisation 
of the Water Flea (Daphnia ■pulex) in 1875, 
In 1879, in conjunction with Mr. Walter Morrison, of Tarn 
House, Malham, and several members of the Yorkshire Geological 
and Polytechnic Society, he conducted an investigation of the 
sources of the River Aire, tracing the water from Malham Tarn to 
the springs at Airehead, and the stream issuing from the base 
of the cave, by opening the sluices of the Tarn and flooding the 
intervening district containing swallow holes through which the 
water escapes, and observing its re-appearance. Acting as Secretary 
for the party, he prepared a report of the investigations, which 
was read before the Society and published in the Proceedings, 
along with a second paper on an intermittent spring at Malham. 
On retiring from business Mr. Tate resolved to devote himself 
to scientific study and teaching, and in order to become thoroughly 
prepared for the work he took several courses of instruction at 
the Royal School of Mines, etc., South Kensington, and at the 
Yorkshire College, Leeds. For some time he conducted a geological 
class at the Bradford Mechanics' Institute, which was the means of 
inclining many young men to pursue a course of geological study. 
On returning to reside in Leeds, he became a popular and successful 
teacher of science. He had classes at Bradford, Harrogate, 
Leeds Mechanics' Institute, Ampleforth College, Malton, Dewsbury, 
Barnsley, and other Yorkshire towns. His subjects were chiefly 
Biology, Botany, Physical Geography, and Geology. He was a 
diligent, thoughtful, and ardent student, and a kind and painstaking 
teacher, endeavouring to interest as well as instruct his pupils, by 
whom he was generally loved and respected. 
In November, 1891, he was appointed Secretary to the 
Yorkshire Boulder Committee, in succession to the late Mr. 
S. A. Adamson, F.G.S. Soon after being appointed Secretary he 
was commissioned by the Committee to visit the Lake country to 
examine its physical and geological features, and to collect such 
specimens of the rocks of the district as would enable students 
to identify boulders from them found in any part of the country. 
Numerous specimens were collected and labelled on the spot, 
and afterwards sections were carefully prepared for the microscope. 
