INDEX. 
page 
Myxine , its respiratory organs described, - - 258 
N 
Nervous and sanguiferous systems , some additional experi- 
ments and observations on the relation which subsists 
between 'them, - 424 
O 
Opium , its effect when applied to the brain, - - 74 
Oxyiodine, a term proposed to be given to the new solid com- 
pound of iodine and oxygene, - - - 212 
P 
Philip, A. P. Wilson, M. D. Experiments made with a 
view to ascertain the principle on which the action of the 
heart depends, and the relation which subsists between 
that organ and the nervous system, - 65 
— 1 • Some additional experi- 
ments and observations on the relation which subsists 
between the nervous and sanguiferous systems, - 424 
Plane , interrupting , its position and character in calcareous 
spar, - - - - - - 275 
Pond, John, Esq. Determination of the North Polar Dis- 
tances and proper motion of thirty fixed Stars, - 384 
Porrett, Robert, Esq. Farther analytical experiments 
relative to the constitution of the prussic, of the ferruretted 
chyazic, and of the sulphuretted chyazic acids; and to that 
of their salts ; together with the application of the atomic 
theory to the analyses of those bodies, - - 220 
Presents , a list of those made to the Royal Society from 
November 1 8 14 to June 18 15 , - 448 
Pressure , simple, on its effects in producing that species of 
crystallization which forms two oppositely polarised 
images, and exhibits the complementary colours by pola- 
rised light, 60 
Prussiate of mercury, analysis of it, - - 221 
R 
Rabbits and fogs , series of experiments on them to ascertain 
the principle on which the action of the heart depends, 68 
