Miscellan ies. 3G3 



University of 



& 



This is a thick octavo volume of eight hundred pages, containing 



a description of those arts which depend upon chemistry; with 

 plates representing buildings, furnaces, machinery, utensils, and con- 

 taining directions for performing the various operations. 



Gray's Operative Chemist was published in London, so late as 

 1828. Mr. Gray was himself an able, operative chemist, and con- 

 versant with most of the subjects of which he treated : at the same 

 time he enjoyed every facility afforded by the metropolis, and an 

 "extensive intercouse with scientific and practical men," which en- 

 abled him to furnish a systematic treatise, comprising what was valua- 

 ble in a chemical dictionary, with the vast improvements made in the 

 arts by the discoveries of modern science. 



Professor Porter's object has been, not only to adapt the work to 

 the use of American manufacturers, but to make it of the greatest 

 practical utility for the work shop. For this purpose, he has omitted 

 such processes as are not likely to be useful in this country, and such 

 parts as relate to the theoretical principles or philosophy of chemis- 

 try. He has made several additions, which are the results of his 

 own observation. They relate principally to the manufacture of oil 

 of vitriol and bleaching powder, calico printing and bleaching. Each 

 subject is exhibited in a manner so concise, as to consume but little 

 of the artizan's time, and yet so clear as to be intelligible to the gen- 

 eral reader. 



The work, though purely practical in its design, contains such va- 

 ried and extensive information, relative to the origin of materials and 

 the operations connected with the different arts, as will not only ren- 

 der it valuable to the mechanic, but highly interesting to the curious. 



13. A Treatise on Fever, by South wood Smith, M. D., Pi 

 sician to the London Fever Hospital. Carey & Lea, Philadelphia. 

 An American edition of the work expressed by the above title, has 

 just been published by Carey h Lea, of Philadelphia. Dr. Smith 

 has treated the subject of fever, that most important branch of phj'- 

 sical science, in a lucid and highly interesting manner. This theory, 

 which is very perspicuous, appears to be sanctioned by a close and 

 discriminating observation of symptoms, through a series of years in 

 hospital practice, and a faithful examination after death. 



