170 Analysis of American Spathic Iron and Bronzite. 



will be for years a standard work in one branch of medical science 

 will remain as a barrier against this inundation from abroad. 



The critical reader will occasionally notice a word or phrase em- 

 ployed in an unusual sense; as, "laboring under perfect health," 

 vol. ii, p. 153; and frequently the word invoke, as in the following, 

 at p. 153, vol. ii, "some of which" conjectures "have been in- 

 voked by Sir Charles Bell ;" and several others of a similar kind. 

 Where there is so much that is correct, these will be easily passed 



over. 



There are two omissions which many readers will regret. The 

 first is, of all reference to the particular works where the facts and 

 opinions quoted may be found ; and the second, of a more complete 

 and thoroughly digested index. Thes§ omissions are so common in 

 the modern English and French works, that they are scarcely thought 

 blameworthy ; still the matters omitted are of so great convenience, 

 the one to him who would examine the subject more thoroughly, and 

 the other to the more casual inquirer, as to deserve a place in every 



work of merit. 



A work like this, so abounding in important facts, so correct in its 

 principles, and so free from errors arising from a prejudiced adhe- 

 rence to favorite opinions, will be cordially received and extensively 

 consulted by the profession, and by all who are desirous of a knowl- 

 edge of the functions of the human body; and those who are the 

 best qualified to judge of its merits, will pronounce it, the best work 

 of the kind in the English language. 



Art, XVIIL— Analysis of A 



Mr 



Mr 



"1. The carbonate of iron, from Plymouth, Vermont, is compo- 



sed as follows : 



Carbonate of protoxide of iron, - - 7.428 



Carbonate of magnesia, - ,- - 1.640 



Carbonate of protoxide of manganese, - 0.656 



Peroxide of iron, - 0.030 



Insoluble residue, - o 140 



9.894 



