218 Notices respecting New Books. 



such a degree of perfection. The press which M. Engehiiann 

 uses, is described as " different from all other presses ;" but we 

 are not aware of any thing which can be wanted ia point of 

 force and et|ualitv of compression, that may not be obtained by 

 means of the ordinary copperplate or rolling presses ; by the 

 latter especially, which upon the whole we should think will be 

 found best adapted to the lithographic process. 



In order to ascertain the full value of this invention, it remaii»s 

 still to be known whether any given luimber of impressions 

 equally beautiful can be taken, and what that number is. In the 

 first essays of the art, it is certain that a very great inequality in 

 the impressions was experienced : and although it is said that 

 M. Entjelmann has devised means of apportioning with the most 

 scrupulous exactness the quantity of the different ingredients, 

 and of retouching his designs from time to time, no results are 

 stated to enable us to form a satisfactory conclusion on the points 

 we have stated. 



It would be also desirable to know at what price the lithogra- 

 phist can furnish his impressions, since this must have no small 

 influence on the success of any competition between them and 

 engravings. 



LIX. Notices respecting New Books. 



N, 



i EARLY ready for publication, A Translation of Thenard's new- 

 Treatise on the general Principles of Chemical Analysis; with 

 Plates and valuable Additions from his Elements of Chemistry, 

 &c. forming one octavo volume. 



A Second Edition of The Amusements in Retirement; or. The 

 Influence of Science and the Arts on the Manners and Happi- 

 ness of Private Life, will be published in a few days. 



Sir William Adams is about to publish A Practical Inquiry 

 into the Causes of the frequent Failure of the Operations of 

 extracting and depressing the Cataract, and the Description 

 of a new and improved Series of Operations, by the Practice of 

 which most of these Causes of Failure may be avoided. 



A new Edition of Dr. Thomson's System of Chemistry is in 

 the press, and will speedily be published. The work will be en- 

 tirely remodelled, and will be comprised in four octavo volumes. 



Dr.Leach, of the British Museum, has recently printed a very 

 complete Catalogue of Birds and Quadrupeds which are natives 



of 



