xxii COKTENTS. 
Chap. _ Page 
44. Alex : eight remedies . . . . . . . . . . . . 508 
45. The nature of salt 509 
46. The various kinds of nitrum, the methods of preparing it, and 
the remedies derived from it : two hundred and twenty- one 
observations thereon .. .. .. .. ..512 
47. Sponges, and the remedies derived from them: ninety-two 
observations thereon .. .. .. 519 
