76 Notices -especting New Books. 



An Epitome of Chemistry. By William HeKRT. The 

 Fourth Editbn, Svo. Published by Johnson. Price 12 s. 

 With great pleasure we announce this useful publication, 

 which may be considered as a new work, though modestly 

 announced as only a new edition of the work published be- 

 fore under the same title. We consider this as one of the very 

 best works that has yet appeared on the subject of which it 

 treats. While it presents a well arranged collection of che- 

 mical facts and processes, it is at the same time well adapted 

 to direct a learner to such a train of simple and easy experi- 

 ments as may best enable him to make rapid progress in ac- 

 quiring correct ideas of the theory. It embraces all the new 

 facts that have arisen since the last edition was published, 

 and is illustrated with engravings of every article of appa- 

 ratus that is essential to the pursuit of operative chemistry. 

 They are by Lowry, and executed with his usual accuracy, 

 precision, and elegance. 



An appendix to the work contains a number of useful 

 tables, several of which are entirely new. 



A Chemical Catechism. By S. Parkes, ISIanufacturing 

 , Chemist. Svo. Published by Symonds. Price 12 s. 624 

 Pages. 



The object, of this publication is to unfold the science 

 of chemistry to artizans and young people by way of ques- 

 tion and answer. It is written in an elegant and popular 

 manner, and rendered as amusing as it is instructive. The 

 answers are concise, and fitted for the memory. Occa- 

 sionally the subject is dilated, and difficulties cleared up by 

 a more ample elucidation, and this is very properly brought 

 forward in the form of notes. 



The work is divided into thirteen chapters; viz. Chap. T. 

 Introductory and Miscellaneous: II. Of Atmospheric Air : 

 III. Of Caloric: IV. Of Water : V. Of Earths: VI. Of 

 Alkalies: VII. Of Acids: VIII. Of Salts: IX. Of Simple 

 Combustibles: X. Of Metals : XI. Of Oxides : XII. Of 

 Combustion: XIII. Of Attraction, Repulsion, and Che- 

 mical Affinity, Each of these chapters is a distinct tract, 



in 



