300 Bibliography. 



8. Obituary. — Ithamar B. Crawe, M.D., of Watertown, was drowned 

 in Perch Lake, Jefferson Co., N. Y., June 2, 1847. Suddenly called from 

 life, he was deeply lamented by the public and affectionately mourned 

 by his particular friends. He fell a sacrifice to his ardor in the pursuits 

 of natural history. In the study of geology, mineralogy and botany, he 

 had long been successfully engaged, and had accumulated a rich treas- 

 ure of specimens in these departments, while he had made himself by 

 his own discoveries and by exchanges, the friend of many of the natu- 

 ralists of our country and of Europe. He was returning from a suc- 

 cessful botanical excursion in a leaky boat, which sunk ; and thus was 

 closed his valuable life, when he had nearly attained the age of fifty- 

 four years. A wife and three children receive the cordial sympathies 

 of numerous friends over the land. 



Dr. Crawe was born in the state of Connecticut, and was descended 

 from one of the Pilgrim fathers of Plymouth rock. His father was a 

 soldier in our revolution, a man of sterling integrity and firmness. The 

 son inherited these manly virtues, and distinguished himself in his pro- 

 fession and pursuits. At the close of his medical studies, he received 

 his diploma from the hand of Dr. Mott. He settled in Watertown soon 

 after his graduation, and, having made it his residence most of the time 

 since, he had endeared himself to a wide circle of his fellow citizens, 

 who have given public evidence of their high estimation of his worth 

 and attainments in his profession and in those studies to which he gave 

 the strong powers of his mind. To that part of the state his loss is a 

 source of public sorrow ; to us all deeply afflictive. C D. 



Rochester, N. Y. ; June, 1847. 



VI. Bibliography. 



1. I. Geology: Introductory, Descriptive, and Practical II. The 

 • Ancient World, or Picturesque Sketches of Creation. By D. T. 

 Ansted, M.A., F.R.S., F.G.S., Professor of Geoloey in Spring's Col- 

 lege, London, &c. &c. 



The geological works of Prof. Ansted have been for some years 

 before the world. The Geology was published in 1844, in two beau- 

 tiful 8vo volumes, of more than 1000 pages. It is divided into 

 three parts.— I. Introductory. 11. Descriptive Geology. III. Practical 

 Geology. 



I. The Introduction, in four chapters, explains the object of the 

 work, the action of present causes, the classes of rocks and the powers 



. concerned in their production, the nature and value of fossils and ot 

 Palaeontology, and of the results whieh it afFords. 



II. The Second Part, in forty-eight chapters, describes, I The tos- 

 sihferous or stratified rocks— under the heads of the older and the newer 

 Palaeozoic period. The secondary period. The Tertiary period. «- 

 The description of crystalline and unstratified rocks. r 



HI. The Third Part, in seventeen chapters, describes Practical ur- 

 ology, with its applications to mining, engineering, architecture, ag- 

 riculture, dec. & . 



The practical geology occupies more than half of the second 

 volume- 



