INDEX. 
Hatchett, Charles, Esq. An analysis of the earthy substance 
from New South Wales, called Sydneia or Terra Australis , 
“ " — An analysis of the water of the Mere 
^ of Diss, - 
Heart , on the Foramina Thebesii of it, 
■ " — account of an unusual formation of it, 
Heat , on that excited by friction, - 
Helena , St. diurnal variation of the magnetic needle in that island, 
H e l l i ns, The Rev. John. A new method of computing the value 
of a slowly converging series, of which all the terms are affirmativej 
— . — An improved solution of a problem 
in physical astronomy ; by which, swiftly converging series are 
obtained, which are useful in computing the perturbations of the 
motions of the Earth, Mars, and Venus, by their mutual attrac- 
tion. To which is added an appendix, containing an easy 
method of obtaining the sums of many slowly converging series 
which arise in taking the fluents of binomial surds, &c. 
Herschel, William, LL.D. On the discovery of four addi- 
tional satellites of the Georgium Sidus . The retrograde motion 
of its old satellites announced; and the cause of their disap- 
pearance at certain distances from the planet explained, 
H ome, Everard, Esq. An account of the orifice in the retina of 
the human eye, discovered by Professor Soemmering. To 
which are added, proofs of this appearance being extended to 
the eyes of other animals, - - - 
Horse , on urinary concretions of that animal, 
Hydrostatic balance, description of one, - 
I 
Immersion of animals, remarks on, - - 
J - 
Jargon , specific gravity of, ~ 
Jones, Sir William and Lady. A catalogue of Sanscrita ma- 
1 nuscripts presented to the Royal Society by them, 
K 
Klaproth , Mr. Analysis of Corundum, 
L 
Latham, William, Esq. Account of a singular instance of at- 
mospherical refraction, - 
page 
no 
57 2 
103 
346 
80 
397 
183 
5 2 7 
4 7 
332 
43 
J 3 9 
108 
4W 
582 
417 
357 
