INDEX. 
page 
Soda and snbcarbonate of, their effects on the urine, 143 
Spallanzani, his examination of a medusa, referred to, 281 
Stron/ites , its composition, - - 63 
Sulphur, experiments on, » - 25 1 
« , no oxygene evolved from it, by the agency of oxy- 
muriatic acid gas, - - 25 7 
Surfaces in contact, which modify the form of prismatic 
appearances. Experiments on the multiplying power of, I64 
Swan, on its gizzard, - - - 187 
T. 
Telluretted hydrogene , the name given to a combination of 
tellurium and hydrogene, - - 28 
Theory, some considerations of, illustrated by new facts, 67 
Thomson, Dr. his experiments on sulphur, noticed, 251 
Trees , on the parts of, primarily impaired by age, 178 
Turkey, on the gizzard of, - - 187 
u. 
Urine, its nature in birds, - - 229 
— , how affected by changes in diet, « 230 
W. 
Wollaston, Dr. his Croonian Lecture, on the duration of 
muscular action, - 
; 
calculus. 
on cystic oxide, a new species of urinary 
2 
223 
From the Press oj 
tV. BULMER & Co. 
Cleveland-Row, St. JamedSp 
London . 
