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'm, J|,^ ^ Bibliog?'aphy. 1 51 



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*- measures five feet by six, and is conveniently mounted on rollers. 

 The lower two-thirds of the sheet are occupied with an ideal geological 

 section and the upper portion by drawings of fossils. The section is 

 an excellent representation, as far as can be done in a single view, of 

 the general principles of geology. Besides exhibiting the dynamics of 

 the science and the succession of ihe rocks in due order, with their 

 names in French and German as w^ell as English, the author has given 

 also the more important geographical positions in which the rocks occur. 

 The New York strata as developed by the recent surveys, and the re- 

 suits of the explorations of other parts of our country, are throughout 

 ■1' ^^^d down, and a section of the whole country ihrough to the Pacific is 



added, so that the chart is thus especially adapted for the American 

 student. The drawFngs of fossils are arranged in groups, those of the 

 same geological system together, and in all amount to two hundred 

 and seventy. five. Mr. Hallos labors in PalGConlolosv, so well known 

 so honorable to the stale which he has served, have prepared 

 nim to present this subject with accuracy and completeness ; and in no 

 other publication of the kind will the student find presented to the eye 

 so perfect an exhibition of the characteristic organic remains of the 

 several strata. Such a chart has been greatly needed for the geological 

 lecture room, and we know of none comparable with it for extent of 

 information, or fullness, accuracy and neatness of illustration. 



4. The Christian Retrospect and Register^ a summary of the Sci- 

 ^ entific, Moral and Religious Progress of the first Half of the XlXth 



century; by Robert Baird, 420 pp., 12mo. New York, 1851.— 

 This work embraces two distinct parts; the first, the progress of the 

 world in general liberty, education, and the sciences; the second, its 

 nioral and religious advancement. Dr. Baird, ihrough his intercourse 

 with various nations of Europe and familiar knowledge of their reli- 

 gtous history and condition, has been enabled to condense in this work a 

 large amount of valuable information. The learned and excellent au- 

 ' thor treats separately of the progress of political liberty and education, 



the enlargement of the bounds of Christendom, the progress of reli- 

 gious liberty and tlie operations and prospects of the many societies 

 now active for the diffusion of Scriptural knowledge. The portion of 

 the volunae devoted to science is by the Rev. B. N. Martin. A com- 

 plete review was of course impossible in so small a compass. The 

 author, without attempting to give a philosophical exhibition of the de- 

 velopment of scientific knowledge, has briefly glanced at many of the 

 steps of progress under the head of the different departments of science 

 and certain of the arts. 



5 Annals of the Lyceum of Natural History of New YorL Vol. 

 V. No. 2, April, 1851. 



Gr. N. Lawrence: On the occurrence of the Caspian Tern (Sylo- 

 chelidon caspius) in North America, p. 37. 



^. N. Lawrewce : Description of a new species of Tyrannus — T. 

 LassiniL—p. 39, and pi. 3, f. 2. 



J- P. Giraud: Description of a new species of Helinaia — IL brevi- 



I P^;i,"'^"-P- 40, and pi. 3, f. 1. 



Y» B. Adams : Descriptions of new species of Partula and Achati- 



nella — p, 41, 



C B, Adam 



p. 45. 



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