566 INDEX. 
Tubularian zoophytes, on the anatomy of, 367. 
Tyndall (John, Esq.). On Molecular Influences. Part I. Transmission of Heat throug 
Organic Structures, 217. 
U. 
\Jric acid calculi, on the solution of, 202. i u j i, 
Vrinary calculi, on the dissolution of, in dilute saline fluids, at the temperature of the body, by 
the aid of electricity, 201 . Section I. On the solution of uric acid calculi, ihid. Section 11. 
On the solution of oxalate of lime calculi, 205. Section III. On the solution of phosphatic 
calculi and of carbonate of lime, 211. Appendix to the paper, 214. 
V. 
Variations, periodic and non-periodic, of the temperature at Toronto, 141. 
W. 
Welsh (John, Esq.). An Account of Meteorological Observations in Four Balloon Ascents, 
made under the direction of the Kew Observatory Committee of the British Association for 
the Advancement of Science, 312. 
Wood, transmission of heat through different kinds of, 223. 
X. 
Xerxes, eclipse of, 19S. 
Y. 
Younghusband (Capt. C. W., R.A.). On Periodic Laws in the larger Magnetic Disturbances, 
165. 
Z. 
Zoophytes, tubularian, on the anatomy of, 367. 
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