464 INDEX. 
Park, Mungo, probably lost his life by shipwreck, 6. 
Partington (C, F.) on the steam engine, notice of, 224 
Patent Medicines, analysis of, 374, 375 
Pelletier and Caventou (M. M.) new researches of, on stryche 
nine, and on the processes employed for its extraction, 
217—219 
Pendulum, mean length of, (vibrating seconds) at Madras, 170 
Pharmacopeia, (French) errors of, 363 
(English) remarks on the nomenclature of, 364, 
365 
Philip (Dr. A. P. W.) review of some of the general principles 
of physiology, with the practical results to which they have 
led, 91. Comparison of the censorial with the nervous fune- 
tions, 92. The nervous and muscular power capable of per- 
forming its functions after the sensorial power is withdrawn, 
96,97. Explanation of the manner in which the brain puts 
a stop to respiration, 98,99. The nervous system, the con- 
necting link between the sensorium and the world which sur- 
rounds us, 103. Effects of galvanism on the nervous system, 
105—114. Some positions respecting the influence of the 
voltaic battery in obviating the effects of the division of the 
eighth pair of nerves, 161, 162 
Phillips. See Conybeare. 
Phosphate of soda and ammonia, constituent parts of, 437 
Platinum, black enamel from, 229 
Player (R. P.) on the morbid influence of the spinal nerves, 
296—298 
Poisons, detection of, 218 
Porcelain-clay, new vein of, discovered, 453 
Potash, (bin-arseniate, and bi-phosphate of,) on the relation be- 
tween the crystalline form and chemical proportions of, 201, 
202; and on the phosphate and arseniate of potash and soda, 
415, 416 
Potassium, different proportions with which it can combine with 
sulphur and with sulphuretted hydrogen, 213—215. Com- 
binations of it with sulphuretted hydrogen, 215, 216 
Potato, on the native country of, 454. On the employment 
of potatoes in steam engines, and other boilers, to prevent 
the calcareous incrustations on their bottoms and sides, 444 
Powders, remarks on the component parts of, 372, 373 
Prime equivalent numbers, table of, for the use of chemical 
students, 49—63 
Printing designs, notice of a new mode of, 432 
Prize-Question, mathematical, by the Royal Academy of Sci- 
ences of Prussia, 431 
Prout (Dr.) on the changes which take place in the egg “during 
incubation, 385, 386 
Pumps, cast-iron pipes recommended for, 352 
