INDEX. 125 



On tlie migrations and natural history of the herring, 210. On 



the present commercial and political state of the lierring fishery, 



222 

 Mac Culloch (Dr.), on the possibility of changing the residence 



of certain fishes from salt-water to fresh, xvii. 209. xix. 235 

 observations of, on the concretionary and crystalline 



structures of rocks, xviii. GO 

 • suggestion of, for the preservation of copper-plates, 



xviii. 1G7. Of the origin, material composition, and analogies 



of rocks, xix. 2S. 

 on the means by which crabs throw off their claws, 



XX. 1. On a peculiar appearance of hoar-frost, 40. Observa- 

 tions of, on the lignites, 204 



Mace, experiments on the oil of, xviii. 317 



Machinery, application of, to the calculation and printing of ma- 

 thematical tables, xiv. 222 



Mackenzie (Sir George), on the theory of association in matters 

 of taste, iii. 135. Illustrations of his theory, 139. Examina- 

 tion of Mr. Alison's theory of taste, 141 



Mackenzie (Colin), review of One Thousand Chemical Experi- 

 ments by, xii. 354. Strictures on his want of order, 356. Spe- 

 cimen of his incorrectness, 35S 



Maclure (Mr.), observations of, on the geology of the West India 

 islands, v. 311 



Macneill (John), observations of, on the influence of local attrac- 

 tion on the magnetic needle, xv. 22 



Macrometer, directions for using, v. 225 



Madariga (Don), voyage of, down the river Meta, ii. 140 



Madder lake, notice of a newly-invented, xii. 1G9 



Madeira wines, account of, xviii. 133 



Magendie (M), observations on the memoir of, concerning the 

 nutritive properties of substances not containing azote, ii. 446 



— experiments of, on the action of arteries in circulation, 



iii. 17S 



on the use of prussic acid in certain diseases, iv. 348 



notice of his physiological researches on the symptoms 



and treatment of the gravel, vi. 40 



