part 1] ANNIVERSARY ADDRESS OF THE PRESIDENT. xlvil 



and life-history of insects. After his retirement he also wrote a 

 most interesting history of the progress of zoology. He was 

 President of Section J) (Zoolog}^) of the British Association at 

 Toronto in 1897, and of Section L (Education) at Dublin in 1908. 

 The Proceeds of the Wollaston Donation Fund were awarded to 

 him hy the Geological Society in 1875 ; he was elected a Fellow 

 of the Royal Societ}^ in 1892, and received the degree of D.Sc. 

 froui Leeds University in 1904. He was an inspiring teacher and 

 charming friend, and his memory will always be treasured by those 

 who knew him. [A. S. W.] 



Dr. Marshman Edward Wadswortii was born at Livermore 

 Falls (Maine) in 1847, where he spent the early years of his life 

 upon his father's farm. He graduated at Bowdoin College in 

 1869, and subsequently became a student of science in Harvard 

 University, receiving the degree of Ph.D. from that institution in 

 1879. From 1877 to 1887 he was closely associated with Prof. 

 J. D. Whitney as assistant in the Geological Department. In 

 1884 and 1885 he visited many Universities in England and on 

 the Continent, familiarizing himself with their organization and 

 studying modern petrographical methods under Prof. H. Posen- 

 busch. He first appears as a contributor to American geology 

 and petrology in the late seventies of the last century. Between 

 the years 1879 and 1885 many papers from his pen were pub- 

 lished in the Proceedings of the Boston I^atural History Society, 

 in the Bulletins of the Museum of Comparative Zoology of 

 Harvard College and elsewhere, among which the following may 

 be specially mentioned : — ' On the Origin of the Iron-Ores of the 

 Marquette District' (1880); 'On the Trachyte of Marblehead 

 Neck ' (1881) ; and ' Lithological Studies' (1884), an important 

 quarto memoir of 266 pages with eight chromolithographic plates 

 illustrating the microscopic features of certain meteorites and 

 rocks. Before 1884 the only important work on microscopical 

 petrography, published in America, was Zirkel's ' Report on the 

 Pocks collected during the United States Geological Ex]3loration 

 of the Fortieth Parallel,' which appeared in 1876. Wads worth's 

 ' Lithological Studies ' is therefore the first work of its kind 

 written hj an American. In this memoir, after dealing with the 

 classification of rocks, their origin, their mode of alteration, and 

 their relation to meteorites, he gives detailed descriptions of the 

 macroscopic and microscopic characters of siderolites, pallasites, 

 and peridotites. 



