16 Proceedings of the Royal Society of Edinburgh. [Sess. 
he collected many parasites of the salmon, and so furnished the materials 
for a communication to the Annals of Natural History on this subject. 
By and by a naturalist was required for the Queensland Government in 
connection with the pearling industry, and Dr Tosh was appointed to 
the post. His field of operations lay in the rich pearling grounds off 
Thursday Island, where he laboured to extend our knowledge of the pearl- 
shells, their life-history and economic features. Whilst thus engaged he 
missed no opportunity of adding to the University Museum of St Andrews, 
and his fine collection of pearl-oysters, the invertebrate fauna of Thursday 
Island, and the spirit-preparations of Ceratodus from the Burnet and 
Mary rivers show his success. He returned to this country in 1905, and 
was appointed Assistant Professor and Lecturer in Zoology in the Uni- 
versity of St Andrews, a post which he held for nine years, when he again 
visited Australia in connection with the pearling industry, returning in 
1915 to promote a syndicate for its extensive treatment on a scientific 
basis. He also made successful experiments, with the aid of Mr Bagot, 
in polishing the Queensland pearl-oysters, by a special process — which 
he no doubt would have largely made use of in his proposed syndicate. 
He was, however, required on active service in Mesopotamia, chiefly in 
connection with the Ambulance Corps, and there he fell a victim to ££ heat- 
stroke ” at the comparatively early age of 45. 
Dr Tosh was a popular and successful teacher both in school and 
college, and he spared no pains to give practical as well as systematic 
instruction. He was an adept in section-making and in all the modern 
technique, and his students excelled in this respect. The excursions he 
made with them on board ship, or to marine laboratories, will long be 
remembered, were it only for the information gained from their genial 
leader. 
He was elected a Fellow of the Royal Society of Edinburgh in 1911, 
and died in 1917. 
Walter G. B. Dickinson, F.R.C.V.S., was born at Boston, Lines., on 
April 22, 1858. He was educated at Boston Grammar School, and studied 
at the Ecole Veterinaire Alfort, Paris, and at the New Veterinary College 
and Surgeons’ Hall, Edinburgh. He was prize essayist and gold medallist 
in 1881, and thereafter succeeded to his father’s business. He was a man 
of rare judgment, and a most skilful operator. He held several public 
appointments, including that of Veterinary Inspector to the Holland 
County Council under the Contagious (Animals) Diseases Act, and was 
veterinary adviser to the Royal, Alliance, and Yorkshire Insurance Com- 
