320 
IN MEMORIAM — WILLIAM CASH 
the many hours that I spent in their society impressed me very deeply 
with the importance of the amateur work in science in Yorkshire and 
the generous spirit of comradeship that animated them all. They were 
naturalists of the best type, each a specialist in some one branch, but 
none restricted to a single subject ; men of wide interests and extensive 
reading. Among them all William Cash seemed to me, without dis- 
paragement of the others, to possess the widest outlook, and when I 
reflect upon the nearly thirty years during which our intimacy lasted, 
and note how his interests were maintained and even enlarged, I feel 
that Cash was as deeply imbued with the true spirit of a naturalist as 
any man I have met. 
It is difficult to say what were his primary interests — perhaps the 
study of the Carboniferous rocks and Coal Measure plants, a field of work 
in which he had distinguished himself by discovery of new types and 
by careful description of his finds ; but it is evident from the variety 
of his publications that he was by no means restricted to Palaiobotany 
and that Invertebrate Zoology had a large place in his activities, while 
either singly or in collaboration with Hick, who became assistant to 
Williamson in the Botanical Department of the Owens College, he 
Avrote upon the structure and affinities of new types of Carboniferous 
plants, for the most part represented by sections by James Spencer, 
another notable Halifax worthy. Of these sections he accumulated a 
magnificent collection. With characteristic generosity he placed his 
treasures freely at the disposal of other experts when he thought that 
they could make better use of them than he could himself. In this way 
many of Cash's most important specimens came to be described by 
Professor W. C. Williamson, and some went to the great Continental 
palseobotanists with whom Cash corresponded. It is gratifying to 
know that the Cash Collection of Fossil Plants, almost in its entirety, 
is lodged in the Manchester Museum, along with a great deal of William- 
son's material. 
In the course of his scientific work he found the need for a knowledge 
of foreign languages, and he became an adept in French, and acquired a 
good working knowledge of German, both of which he used to my ad- 
vantage in the last yea,Y of his life. His proficiency in these languages 
enabled him to maintain a correspondence with several eminent 
palseobotanists, particularly Professor Zeiller and the Graf zu Solms- 
Laubach. 
