I N D E X. 
Ostrich , American, (Rhea Americana), its solvent glands fewe; 
than in other birds, their structure, &c. - «><• 
■ African , (Struthio Camelus), on its solvent gi n’s, 
— — — — on its gizzard, - 
P. 
Parrot, (Psittacus iEstivus), on its solvent glands, 
Phosgene , or Phosgene gas, the name given to a gaseous com- 
pound of carbonic oxide and chlorine, 
Phosphorus, of some combinations of, 
on its combinations with chlorine, - 406, 
Pigeon, (Golumba Domestica), on its solvent glands, 
Planes, of the attraction of those bounded by right lines, 
Plants , on the motions of their tendrils, 
Plumbane , the name given to a compound of lead and chlo- 
rine, - 
its composition, - 
Poisons, further experiments and observations on their action 
on the animal system, - 
mineral, conclusions respecting their agencies on 
the animal system, - 
Presents , list ot those made to the Royal Society from No- 
vember 1811 to June 1812, 
Priestley, Dr. His experiments on fluor acid air noticed, 357 5 
Prism, of the attraction of an infinitely long one, whose base 
is any right lined figure whatever, 
Prisms, of their attraction, - 
Problem , geometrical , one remarkable for generality and sim- 
plicity of result, - - - 
Pyramids , of their attraction, and generally, of any solids 
whatever that aie bounded by planes, 
R. 
Rabbits, experiments on the changes produced in atmospheric 
air by their natural respiiation, - - 383, 
Rabbits, experiments on the changes produced in atmospheric 
air by their artificial respiration, - • 384> 
S. 
Sabrina, the name given to an island recently formed by a 
volcano, near St. Michael’s, - 
Snakes, observations intended to shew that their progressive 
motion i> partly performed by means of the ribs 
MDCCCXII. 3 K 
•■age 
399 
400 
ib. 
399 
151 
406 
40? 
398 
248 
314 
185 
ib. 
205 
226 
417 
358 
302 
263 
310 
257 
384 
388 
158 
163 
