400 



INDEX. 



H. 



Hall, James. Fossils, new species of, 204. 



Haplovelalon, 53. 



Harris, Dr. Thaddeus William, decease of, 224. 



Hayes, A. A. On the disappearance of marsh gas, 85. On pho- 

 tometer, 92. On a patent process for the preservation of the juice 

 of the India-rubber-tree from decomposition, 108. New process of 

 coating iron with copper, 162. Change in Cochituate water, 173. 

 A new species of wax, 190. On liydro-electric currents, 198. On 

 a specimen of native iron from Liberia, 199. On aluminium, 221. 

 Change of position among the particles of metal induced b)^ the 

 percussion of the masses they form, 322. Nature of effluvia and 

 ashes emitted by volcanoes, 336. On some points of chemical 

 interest, connected with the manufacture of ductile iron, 341. 

 Telegraph cable, 355. Carbonaceous deposit, 379. 



Hayward, George. Hydrophobia, 60. 



Hedgcock's quadrant, 378. Report on, 384. 



Henry, Joseph. On the induction of electrical currents, 198. 



Heterandria, 43. 



Hitchcock, President. Fossil fruits and seeds, 3. 



Holmes, O. W. On the microscope, 5. On the voluntary motion of 

 the ear in man, 355. Stand for a microscope, 385. 



HoRSFORD, E. N. Leprosy, 34. On rendering gutta percha elastic, 

 88. On the nutritive value of amylaceous articles of food, 89. 

 Incrustation of Cochituate water-pipes, 89. On the value of differ- 

 ent kinds of prepared vegetable food, 109. Aluminum, 127. 

 Transformation of a foetal child into phosphorus, 321. The value 

 of saltpetre for the manufacture of nitric acid, 354. 



Hydrophobia, 60. 



I. 



Incrustation, ferruginous, of the Cochituate water-pipes, 89. 



Indian arrow-heads, 322. 



India-rubber, on the preservation of, 108. 



Inscription, Runic, 319. 



Invitation from the Committee on the Inauguration of the Statue of 



Franklin, 320. 

 Iron from Liberia, 199. 



