178 Notices respecting New Books. 



one degree less in order to compensate the excess of satura- 

 tion. The mean term of potashes is 53 : this implies that 

 they require for their saturation fifty-five hundredths of their 

 weight of sulphuric acid. 



[To be continued.] 



XXV. Notices respecting new Books. 



The Code of Health and Longevity ; or, A concise Vietv 

 of the Principles calculated fur the Preservation of 

 Health, and the Attainment of long Life. Being an 

 Attempt to prove the Practicability of condensing, within 

 a narrow Compass, the most material Information hitherto 

 accumulated, regarding the different Arts and Sciences, 

 or any particular Branch thereof. By Sir John Sin- 

 clair, Bart. — 4. Vols. 8vo, 



OiR John Sinclair ohserves, that the multitude of books 

 published on the subject of health are so exceedingly nu- 

 merous, that it almost requires a life to read through the 

 whole, and that the only satisfaction that can arise is from 

 this aggregated knowledge, collected from certain parts con- 

 tained in each work. With astonishing industry the inde- 

 fatigable baronet has waded through the stores of anlient 

 and modern lore, and culled from each what appeared to 

 him adapted to the purpose. His Code of Health and 

 Longevity is therefore not an original production, founded 

 upon his own experience ; but extracts from all the learned 

 writers on that subject in every age and country of the 

 world. This plan first suggested itself to Dr. Thornton, 

 tvhich he brought to some degree of perfection in the Philo- 

 sophy of Med'cine, or, as he has ingenuously confessed in 

 the title-page, Medical Extracts on the Nature of Health 

 and Disease; and sir John Sinclair has made the greatest use 

 of this able performance, everywhere quoting it as a work 

 of the first authority ; and indeed the Code of Health is an 

 excellent companion to the Philosophy of. Medicine, filling 



up 



