310 
INDEX. 
D. 
Dantell (J. Frederic, Esq.). Sixth letter on voltaic combinations, 137. 
E. 
Electric inductive capacity, on the specific, of certain substances, 165. 
F. 
Farquharson (The Rev. James, LL.D.). Report of a remarkable appearance of the aurora 
borealis below the clouds, 87. 
Fibre, on, 89. Formation of a flat filament within the blood-corpuscle, ibid. Structure of the flat 
filament (“ fibre”) more particularly investigated, 92. The spiral form as general in animals 
as in plants — universality and early appearance of the spiral form, 93. Mode of origin of the 
flat filament (“fibre”) — its reproduction, ibid. Facts observed in the formation and struc- 
ture of nerve, 95. Facts observed in the formation and structure of muscle, 98. Facts ob- 
served in the formation and structure of the crystalline lens, 103. Facts observed in the 
structure of blood-vessels, mould, woody fibre, hair, feathers, &c., 104. On the structure 
and mode of increase of the vegetable spiral. — On the reticulated duct, annular duct, and 
dotted duct of plants, 107. Analogy between the tissues of animals and plants, after (as well 
as before) their formation is complete, 109. Additional observations, 110. Facts observed 
in the coagulation of the blood, ibid. 
Forbes (James D., Esq.). On the transparency of the atmosphere and the law of extinction of 
the solar rays in passing through it, 225. 
G. 
Geology, physical, researches in, Third Series. On the thickness and constitution of the earth’s 
crust, 43. Ellipticity of any surface of equal density within the earth, 49. Thickness of the 
earth’s crust, 50. Constitution of the earth’s crust, 51. Permanence in the inclination of 
the earth’s axis, 53. Condition respecting the temperature of fusion for the matter com- 
posing the earth, in order that its actual temperature may be due to its original heat, 54. 
Guaiacum, action of the rays of the solar spectrum on a solution of this resin, spread on paper, 
182. 
H. 
Harris (W. Snow, Esq.). On the specific inductive capacities of certain electrical substances, 
165. 
Herschel (Sir John F. W., Bart., K.H.). On the action of the rays of the solar spectrum on 
vegetable colours, and on some new photographic processes, 181. Postscript, 209. 
Hopkins (William, Esq.). Researches in physical geology. Third Series, 43. 
K. 
Kane (Robert, M.D.). Contributions to the chemical history of palladium and platinum, 275. 
Kidney, Malpighian bodies of the, on the structure and use of the, with observations on the cir- 
culation through that gland, 57. 
