64 PUocKEUiN(;s oi' tiik 



of the lungs. lu connection witli liis investigations into the 

 causes of death he was always ready with sucjt^estions and advice 

 to the curators on (juestions of diet, disinfectants, and otlier 

 matters relating to tlie health and welfare of the animals; and all 

 this, it must he added, was done practically as a work of love, the 

 salary he received heing rather in the nature of an honorarium, 

 and no adequate remuneration for the time and energy he devoted 

 to the ^Society's service. The severance of his connection with 

 the Society in 1917 was deeply regretted both by himself and his 

 friends. His mortal illness was probably on him at the time, for 

 he died in the following year at Combe Park, Sevenoaks, the 

 residence of his intimate friend Robert Mond, J. P. His remains 

 were cremated at Golder's Green and his ashes were interred at 

 Shirley, close to his mother's grave. [K. 1. PococK.] 



A zealous and hard-working naturalist has been lost to us in the 

 death of William Denison Kokhuck on the 1.5th Pebruai-y last. 



He was born in Leeds on the .5th Januar}^ 1851, and lived 

 there until he was seventeen years of age, when his parents took a 

 house in Pannal, near Harrogate, as a summer retreat for succes- 

 sive years. At this place our late Fellow b«gan his collecting, 

 which lasted throughout his life; he began by collecting insects, 

 and although he was not a professed entomologist he was intensely 

 interested in that science, and made a point of attending each 

 meeting of the Entomological Section of the Yorkshire Natu- 

 ralists' Union. In 1877 he published a paper styled '' Locusts ir> 

 Yorkshire," but which f:ir exceeded its title by cataloguing all the 

 known locust flights throughout Britain from 1842 to 1870, which 

 remains the best account even now. He was accustomed to keep 

 records of all papers relating to every order of insect published in 

 various journals referring to Yorkshire and the northern counties 

 generally, and thus gi'adually amassed an immense body of infor- 

 mation, wljicli was available for any author working in special 

 departments of that extensive subject. 



A close friend of Mr. Koeljuck has remarked upon his posses- 

 sion of a brilliant and rare combination of synthetic and analytic 

 faculties, coupled with great foresight and clear judgment ; he 

 had a great gift for administration, and this capacity was turned 

 to account when the Yorkshire Naturalists' Union, the Concho- 

 logical Society, the Leeds Conchological Club, and the Leeds 

 Naturalists' Field Club were established, as the constitutions of 

 all these associations were drafted by him and have successfully 

 withstood the test of time. 



The Y'orkshire Naturalists' Union owed its present shape to 

 Mr. Roebuck. He was appointed one of the secretaries in 187& 

 of the West Riding Consolidated Naturalists' Society, which was 

 an association of vai'ious natural history societies of south-west 

 Yorkshire. In 1877, with the help of Mr. G. T. Porritt and the 

 late C. P. Hobkirk, the Yorkshire Naturalists' Union was firmly 



