LIlOrEAN SOCIETY OF L0:N'D0]S'. 43 



benefit of his son's health. Ahnost all the plants figured in the 

 'Contributions to the Flora of Mentone ' by John Traherue 

 Moggridge, were gathered by his fatlier, who S])ent much of his 

 time in walking over the hills round Mentone for that object. 

 In 1868 he made a summer excursion to the Col di Tenda, to 

 inspect the inscribed rocks near Saspello, called the " Meravi- 

 glie;" and he published a pamphlet describing that journey. 

 After his son's death in 1874 he returned to England, and con- 

 stantly resided in London until his death. 



Henrt Young Darracott Scott, Major-Greneral, Eoyal 

 Engineers, was born in 1822. Kv entered the Royal Engineers 

 in 1840, and retired from the active list in 1871, then becoming 

 Director of Buildings at South Kcnsin.gion, acting as Architect 

 to the Eoyal Albert Hall and Science Schools, and was also 

 Secretary to the Eoyal Commissioners of the 1851 Exhibition. 

 He was elected Fellow of this Society on Jnnuary 19, 18G5, 

 and of the Eoyal Society on June 3, 1*875. He died ou April 

 16, 1883, at Sydenham. 



G-EORGE Henry Kendrick Tit wattes. "When a young man, 

 living near Bristol, he devoted all his leisure to the investigation 

 of the lower organisms. In 1841 he began to publish papers 

 in the ' Annals of Natural History,; ' and previously to that his 

 reputation as a biologist was such that he was employed by Dr. 

 Carpenter to revise the second edition of the ' Principles of 

 Physiology,' the standard book of the time on its subject. He 

 paid special attention to the freshwater algae, and was in con- 

 stant correspondence with the chief English and foreign crypto- 

 gamists of the day. His discoveries in this group were notable, 

 and were embodied in papers in the ' Annals ' for 1846 to 1849. 

 Of these the most important was on the discovery, in 1847, of 

 the fact that the Diatomacea? (then considered animals) were 

 true algae — an immense step forward in our knowledge of these 

 minute organisms, which finally settled their position in nature ; 

 and his papers generally, though few and dealing with special 

 points, were of that kind which point out the way to important 

 generalizations. They gave him a European reputation. In 

 1846, the great French cryptogamist, Montague, dedicated to 

 him a genus of zygnematous algae, Tlnvaitesia. 



At this period Thwaites was a lecturer ou botany at the School 

 of Pharmacy in Bristol, and afterwards at the Medical School 

 there; and in 1847 lie became a candidate for a chair of Science 

 in one of the new Queen's Colleges in Ireland. This application 

 was powerfully supported by such men as Eobert Brown, Sir W. 

 Hooker, Lindley, Montague, Tulasne, and many others ; but it 

 was uusLiccessful ; and when Dr. Gardner's death, in March 1849, 

 became known at home, the vacant post in Ceylon was ottered 

 by Earl Grey to Thwaites. 



