BIOGRAPHICAL NOTICES. 
247 
Entomology. After the publication of his work on British Anoplura, 
Mr. Denny continued to enrich his collection with Anoplura from all 
parts of the world, with the intention of publishing a companion 
Monograph on Exotic Anoplura. He made drawings and commenced 
the engraving of these on the same plan as his published work, but 
these were never finished, and after his death Professor Westwood, of 
Oxford, purchased both the collection and unfinished plates with a 
view to completing the work. The estimated expense of finishing 
the work was found to be so considerable as to deter the Professor 
from undertaking such a speculation, and the collection and plates 
are now in the University Museum. In the formation of a collection 
of such unpopular creatures as the Anoplura, Mr. Denny had very 
few rivals, and he received gTeat assistance from all parts of the world. 
Of the numerous sources through which his collection was enriched 
it may be stated that Charles Darwin added to it specimens collected 
during the voyage of the "Beagle"; Sir John Richardson and Sir 
J. Ross from the Arctic Regions ; Dr. Livingstone from Central 
Africa ; and at home the Officers in the Gardens of the Zoological 
Society were specially requested by the late Prince Consort to give 
Mr. Denny all the assistance in their power. 
Among other things Mr. Denny was an enthusiastic Botanist, 
and in 1832 was elected Lecturer on Botany in the Leeds School of 
Medicine, which appointment he occupied for a long term of years. 
He was personally acquainted with many of the most distinguished 
Botanists of his day. 
In 1845 his connection with the Yorkshire Geological and Poly- 
technic Society commenced, and during the remainder of his life he 
took the deepest interest in this Society's welfare. About the last 
work executed before his death was the preparation for the press of 
the annual volume of Proceedings of this Society. In the year 1845 
he presented his first communication to the Society on Fossil Animal 
Exuviae of the Yorkshire Coal-field ; and from this time down to 
1870 the Proceedings contain records of his numerous contributions. 
In 1843 he was elected an Associate of the Linneau Society. He 
was also a Corresponding Member of the Academy of Natural Sciences 
of Philadelphia ; Honorary Member of the Philosophical Society of 
