378 Bibliography. 



The Rev. Mr. Phelps had prepared a book of this kind, to accompany 

 the British Flora of Dr. J. E. Smith, President of the Linnsean Society 

 of London, which was well received. His method was adopted by 

 Miss Johnson, with some amendments. The Botanical Teacher gives 

 Lindley's concise generic descriptions of the genera, without abbrevia- 

 tions ; but the specific descriptions are given by abbreviations. By 

 using but one set of words, a general system of North American plants 

 is compassed in a small volume of 268 pages. 



This treatise is universally approved by all correct teachers of bot- 

 any, who have seen it. On a hasty view, the abbreviation plan may 

 appear forbidding. But by a card properly adjusted, the reader sees 

 every abbreviation at one glance of the eye, without opening the book. 



Being prepared by an experienced teacher for the use of her own 

 pupils, and for the general extension of the science among young 

 scholars, (for whom she considers botany as better adapted in early 

 youth than any other study,) nothing is charged on the work for au- 

 thorship. Therefore a class of a dozen pupils can be furnished for 

 about half as many dollars. 



As it is fitted for the vest pocket, and contains all North American 

 plants, (excepting some recent discoveries in California and other dis- 

 tant regions,) it is most perfectly adapted to the wants of experienced 

 botanists, who collect plants in fields and forests. 



Errors, misprints, and omissions are to be found in it as in all books. 

 But considering the great care and labor required in reducing a general 

 system of the botany of a continent to a book of a hand's breadth and 

 thickness, the errors are very few. 



9. Monograpliie d'' Echinodermes vivans et fossiles, par L. Agas- 

 si%. 2d livraison, contenant les Scutelles. 



M. Agassiz's Monograph of the Echinodermata, living and fossil. 

 2d livraison, comprising the family Scutella, (Linn.) 4to. pp. 131, and 

 27 plates. Neuchatel, July, 1841. 



In Vol. XXXVII, p. 369, of this Journal, we announced the appearance 

 of the first livraison of this work, and gave an abstract of its contents. 

 That part, it will be remembered, was devoted to the family of the 

 Saleniarii, and a conspectus of the genei'a and species of that family 

 will be found in the notice alluded to. The present livraison embi-aces 

 that part of the family of the Clypeastroides containing the Scutellarii, 

 It is prefaced by an interesting chapter on the history, different divis- 

 ions, general form, structure, relations to other Clypeastroides, and geo- 

 logical and geographical distribution of this family. 



In twenty seven elaborate plates, in part colored, we are presented 

 with about two hundred and thirty distinct figures, including enlarged 



