148 THE entomologist's record. 



butterfly, for instance, proved this unmistakably ; daring the process of 

 getting rid of its old skin the caterpillar is in a state of rapid 

 oscillation, but the photographs were as clear and definite as if the 

 insect had been at rest : tlie succession of pictures showed the different 

 stages of this metamorphosis from the first spinning up of the larva, 

 to the fully developed chrysalis ; some 10 days later the butterfly 

 breaks out of the chrysalis and one slide showed it just after 

 emergence. 



Mr. Wilkinson's photographs dealt with a large number of subjects 

 as spiders, butterflies and moths, beetles as well as studies of flowers 

 with their insect visitors ; many wore in natural colours by the Paget 

 process and the whole exhibition fully justified the statements of the 

 lecturer regarding the scope for this branch of photography. 



Exhibits. — Mr. P. G. Nagle made an interesting exhibit of local 

 Lepidoptera from Chester and district, which included the following : — 

 Celastrina arrjiolns, Polyj/onia c-alhum, CoUcik /ii/ale, together with 

 A)iiphipi/ra pijraiiiidea,Maiiiestra glauca, Galyinnia affixis, Tiliacea eitrago 

 and Asl('r<)scoj)iis spJiin.r. 



OBITUARY. 



The Hon. Victor A. H. Huia Onslow. 



Mr. Onslow died at Cambridge on June 27th, at the early age of 

 32. He was born in New Zealand, in 1890, when his father, the late 

 Earl of Onslow, was Governor-General of that colony. Debarred from 

 following the active life he had chosen through paralysis of the lower 

 limbs by a diving accident while on a holiday in the Tyrol, in 1911, 

 he settled at Cambridge and devoted himself to research work. He 

 had already shown a strong bent for science, and with extraordinary 

 courage he settled down to make the best use of the limited powers he 

 had. The Mendelian investigations were particularly attractive to him, 

 and many were the papers he contributed to scientific journals on the 

 subject. Of great interest to Entomologists is his work on the Inherit- 

 ance of Colour in the Lepidoptera, and last year he contributed a long 

 paper on the Causation of Colour in the Wings of Lepidoptera to the 

 I'roceedimis of the Royal Society. To the Jotimal of Genetics he con- 

 tributed a series of papers on the yellow forms oi'Ahraxas yiossulariata, 

 on Melanism in Boarmia species, in Hemerophila ahriiptaria, in A. 

 yroiftitdariata ab. raiieyata, and in Diaphora mendica var. rusticata. In 

 the complex cases in which intermediates occur he demonstrated by 

 means of an ingenious device, the " tintometer," that several factors 

 were involved, and that true Mendelian segregation occurred, He also 

 Dublished an important paper in the Philnsop}iical Transactions of the 

 Uoyal Society ill 1921, " On a Periodic Structure in many Insect Scales 

 and the Cause of their Iridescent Colours." Few entomologists had 

 the pleasure of knowing Mr. Onslow personally, but all must admire 

 him for the courageous determination of character which enabled him 

 to turn what seemed a maimed existence to usefulness for mankind, 

 and regret that such a valuable life has ended so prematurely. — E.A.C. 



