26 INDEX. 



Bizio (M.), experiments of, on the colouring matter of the blood, 



xvi. 173, 174; and on evitrogene, 174-176 

 I experiments of, on the black principle of sepia, xx. 181 



Black (Dr.), his sensible balance, xx. 161, 162 

 Black enamel, obtained from platina, xiv. 229. 

 Black powder, fall of, from the air, ix. 202 

 Black Prince, silver coins of discovered, x. 474 

 Blackburn (C. Esq.), on a method of finding the latitude at sea, 

 by the altitudes of two fixed stars, when on the same vertical, 

 xviii. 99-110 



■ ■ rule for clearing the lunar distance from the effects 



of parallax and refraction, xix. 117, 118 

 Bladder, on the production of calculi in, viii. 205. Nature of 

 them, 205-210. Treatment of them, 211-218 



• notice of an instrument for breaking calculi in, xiv. 453. 



XX. 21-24 

 Blainville (M.), Sur les Ichthyolites^ analysis of, with strictures on 



his errors, and the imperfections of his work, xvii. 105-201 

 Blair (W. Esq.), remarks on his system of secret writing by ci- 

 phers, xii. 25-27 

 Blake (Captain), description of the royal gardens of Lahore, ix. 



311-318 

 Bleaching Powder, analysis of, xii. 175 



— — its process of manufacture explained, xiii. 9-14 



■ experiments for ascertaining the strength of, 



xviii. 182-185 

 Bleeding, successfully employed in a singular case of cough, vii. 



43-48 

 Blight, in apple-trees prevention of, v. 357 



Blood, huffy coat of, not confined to venous blood, i. 295 ; but 

 als o found in arterial blood, ibid, 



• on the heat evolved by, during coagulation, ii. 246-249 



on the changes of, in the act of coagulation, iv. 362, 363 



diameter of the globules of, xiii. 155, 156 



' remarks on the huffy coat of, xiv. 378-380 



^— examination of, and of its action on the different pheno- 



