Miscellanies. 399 



ed according to Jussieu, as modified by DeCandolIe ; and the author, 

 has followed, with few exceptions, the arrangement and characters 

 given in the article Botany, in the new edition of the Encyclopaedia 

 Brittannica. The work contains a sketch of the rudiments of Bot- 

 any, a glossary of terms, and a table of the Linncean classes and 

 orders. It is confined to the description of indigenous plants growing 

 north of Virginia; and describes 641 genera and 2105 species. 



13. JVotices of text-books of the Rensselaer School, '[or Institute,^ 

 in Troy, JVeiv York. — We have received copies of four of the text- 

 books of Rensselaer School. As they are composed upon the pe- 

 culiarly practical plan of that school, a few short notices of them 

 may be acceptable. 



1. Art without Science; second edition. — This book is made 

 up entirely of practical directions for the Surveyor and Engineer. 

 As Prof. Eaton, the author, was, for a long time, a practical surveyor; 

 and held a land agency of between two and three hundred thousand 

 acres of land for ten years, the surveying part is necessarily a prac- 

 tical system. The engineering part furnishes elementary and prac- 

 tical views of minor value. Cost 75 cts. 



2. Chemical Instructor; fourth edition. This is truly a sim- 

 ple and practical little treatise. It contains 324 pages, 12mo., and 

 is made up almost wholly of directions for experiments, short ration- 

 ale, and applications. The experiments are the result of Prof. 

 Eaton's own trials, performed with the most cheap and simple appa- 

 ratus. He has given minute directions, and the cost, for procuring 

 every thing required for a course of experiments (which he brings 

 under one hundred dollars) sufficient to illustrate the general outlines 

 of the science experimentally. He refers to other books for the 

 reading part, as he calls it. Cost ^1. 



3. Geological Text-Book ; second edition. This work may 

 be considered as more nearly original than any other work of the 

 author, (Prof. Eaton.) It consists of a general summary of all his 

 discoveries and observations, made at the expense of that distinguished 

 patron of science, the Hon, Stephen Van Rensselaer, of Albany, 

 with the synonyms, and most important theories of foreign geologists. 

 It contains sixty eight lithographic figures of organic remains, exam- 

 ined in place by the author ; and a geological map of the State of 

 New York, and of the proximate parts of the adjoining States. Cost 

 il 25, 



