William CroAvford Williamson, ZL.D., F.RS. 443 



— Eeport on the Geology and Economic Minerals of 

 the Southern Part of Portneuf, Quebec and Mont- 

 morency Counties, P.Q, Rep. of the Geol. .Survey 

 of Canada, 1890-91, L. 



Smyth, C. EL, Jr. : On Gabbros in the South-western Adi- 

 rondack Region. Am. Jour, of Science, July, 1894. 



— Crystalline Limestones and Associated Rocks of 

 North-western Adirondack Region. Bull, of the 

 Geol. Soc. of America, Vol. VI. 1895. 



Van Hise, C. R. : Correlation Papers, Archaean and Algon- 

 kian. Bull. N. S. Geol. Survey, No. 86, 398. 



OBITUARY NOTICE. 

 William Crawford Williamson, LL.D., F.P.S. 



The most eminent structural pala?o- botanist of our time 

 has passed away — ripe in age, in accumulated work, and 

 honour ; though the field to which in his later years he 

 devoted himself is not one that courts notoriety or attracts 

 much of the attention even of that part of the novelty- 

 seeking crowd which addicts itself to new things in science. 

 Nevertheless, the work done by Williamson must live, 

 and can never cease to be regarded as marking a new 

 departure in regard to our knowledge of the real structure 

 and affinities of that old vegetation to which we owe our 

 most important beds of coal. 



Williamson was a naturalist from his youth. Born at 

 Scarborough in 1816, and the son of a man noted in his 

 •day as an amateur geologist and collector, before he was 

 •of age he had written papers on local zoology and geology, 

 and had contributed to Lindley and Hutton's Fossil Botany 

 drawings and descriptions of Mesozoic fossils from York- 

 shire, among which was the remarkable cycadaceous plant 

 that bears his name, the Williamsonia yigas. He was 

 educated for the medical profession, but from the first 

 devoted himself rather to scientific than professional 



