1915.] 223 



parasites had no communication either with the exterior (their entrance holes 

 being blocked up), or with the body cavity of the host. They wei-e, however, 

 alive, and Thompson regards them as undergoing a certain phase — possibly a 

 hibernation phase — of their life-cycle. 



bituarg. 



On April loth Mr. Edwin Wilson, the well-known scientific draughtsman, 

 died at his home at Great Shelford, Cambridge, at the age of 59. He was one 

 of the sons of the fii-st Principal of the Civil Engineering School at the Crystal 

 Palace. He first entered a bank, but soon relinquished the idea of a business 

 life, and directed his energies to drawing, and particularly to the figuring of 

 scientific objects, in which he fovmd his metier. Some of his earliest efforts in 

 lithography appeared in Phil. Trans, in 1881, among the plates illustrating one 

 of Professor W. K. Parker's works on Batrachia. In 1884 Wilson came to 

 Cambridge as manager of a new lithographic department of the Cambridge 

 Scientific Instrument Company. The Company sent him to Germany, where he 

 for some time studied lithographic methods. On the lapse of this department 

 soon after, he commenced an independent career as scientific draughtsman and 

 lithographer in Cambridge. He never lacked work, and built up an establish- 

 ment of considerable size, which was in 1913 amalgamated with the Cambridge 

 University Press as a lithographic department of the latter, with himself as 

 manager. His life was a toilsome one ; he worked very long hours, and, until 

 quite recently, never indulg-ed in holidays. He always devoted a large part 

 of his time to the making of original drawings. Though he di'ew objects of all 

 kinds, it was the figuring of insects which became his speciality. He often 

 noted points which had escaped the expert's observation, and excellent results 

 were obtained by collaboration of expert and illustrator, combining the know- 

 ledge of the one with the draughtsmanship of the other. Wilson executed 

 illustrations for works far too many to eniimerate, but one may specially 

 mention the " Biologia Centrali-Americana," for which he produced more than 

 100 plates. His name also appears, in conjunction with that of Dr. A. E. Shipley, 

 as author of a paper " On a possible stridulating organ in the mosquito " 

 (Tr. E. Soc. Edinburgh, Vol. 40, 1902, p. 367). He was a Fellow of the 

 Entomological Society from 1894 to 1905. 



Wilson's industrious habits left but little room in his life for pursuits out- 

 aide his profession. He was however an active Church-worker and a chiirch- 

 warden at Great Shelford. His refined and charming personality made him 

 many friends. Having been severely attacked by influenza early in 1914, he 

 was forced to make a voyage to the West Indies, but the same illness struck 

 him down early this year, after which he swiftly fell a victim to tuberculosis. 

 He leaves two daughters and four sons, three of whom are serving at the 

 front.— H. S. 



