MisceUatiies. 391 



plates, two colored. 7. Thymallus vexillifer, Ag., three plates, two 

 colored. This work is to the fishes of Europe what Audubon is to 

 the birds of America, a perfect iconography. 



We are happy to state that two copies of it ai'e on sale in the 

 hands of M. Augustus Mayor, of New York, who has been before 

 lyientioned as the friend and correspondent of M. Agassiz,* and we 

 hope that they will be speedily placed in the libraries of some of our 

 societies, where they will be accessible to the student of this much 

 neglected but most interesting branch of natural history. There are 

 three prices for the first division, viz. on ordinary paper, 75 francs ; 

 on superfine paper, with selected plates, retouched with great care, 

 100 francs ; on Bristol board, (carton velin,) the most sumptuous im- 

 pressions, 150 francs. This work is published at the expense of the 

 author, and we hope that the public will, in this case, do what the 

 British Association did for the Poissons Fossiles, indemnify him for 

 the cost. 



17. Elements of Chemistry, containing the elements of the sci- 

 ence, both experimental and theoretical, intended as a text-book for 

 academies, high schools and colleges ; by Alonzo Gray, A. M., teach- 

 er of Chemistry and Natural History in the Teachers' Seminary, An- 

 dover, Mass. 1840— 12mo. pp. 359. 



A Manual of Chemistry, on the basis of Dr. Turner's Elements 

 of Chemistry; containing in a condensed form all the most important 

 facts and principles of the science, — designed as a text book in col- 

 leges and other seminaries of learning ; by John Johnston, A. M., 

 Professor of Natural Science in Wesleyan University, Middletown. 

 1840— 12rao. pp. 453. 



Both the above compilations made their appearance about the same 

 time, and are both published with the same object — that of bringing 

 the subject into a moderate compass, and within the means of all stu- 

 dents. Unhappily for our reputation as advancers of science, almost 

 all the works on chemistry which have yet been issued here, have been 

 written on the basis of some foreign treatise. We hope the day is 

 not far distant when American chemists will take a high rank as ori- 

 ginal investigators. 



18. Hitchcock'' s Geology. — Elementary Geology, by Edward Hitch- 

 cock, Professor of Chemistry and Natural History in Amherst Col- 

 lege, and Geologist to the State of Massachusetts. Amherst, 1840, 

 pp. 329, small 8vo. 



* M. Mayor has also for sale two copies of the Echinodermata, of the same au- 

 thor. Vol. 35, p. 400. Vol. 37, p. 369. 



