CONTENTS. 
IX. Some Observations on the Mode of Generation of the Kan- 
garoo, with a particular Description of the Organs themselves. 
By Everard Home, Esq. F. R. S. p. 221 
X. On the Conversion of Animal Substances into a fatty Matter 
much resembling Spermaceti. By George Smith Gibbes, B.A. 
Communicated by George Shaw, M. D. F. R. S. p. 239 
XI. Observations on the Influence which incites the Muscles of 
Animals to contract in Mr. Galvani’s Experiments. By Wil- 
liam Charles Wells, M. D. F. R S. p. 246 
XII. Observations on the Structure of the Eyes of Birds. By Mr. 
Pierce Smith, Student of Physic. Communicated by .George 
Pearson,- M. D. F. R. S. p. 263 
XIII. Observations on the best Method's of producing artificial 
Cold. By Mr. Richard Walker. Communicated by Martin 
Wall, M. D. F. R. S. p. 270 
XIV. Observations on the Grafting of Trees. In a Letter from 
Thomas Andrew Knight, Esq. to Sir Joseph Banks, Bart. 
P. R. S. p. 290 
XV. On Welding Cast Steel. By Sir Thomas Frankland, Bart. 
F. R. S. p. 296 
XVI. The Binomial Theorem demonstrated by the Principles of 
Multiplication. By the Rev. Abram Robertson, A. M. of 
Christ Church, Oxford, F. R. S. In a Letter to the Rev. Dr. 
Maskelyne, F. R. S. and Astronomer Royal. p. 298 
