XIV 



On the Difference in the Appearance of the Teeth and the Shape of the 

 Skull in different Species of Seals. By Sir Everard Home, Bart. 

 V.P.R.S page 168 



Experiments and Observations on the Developement of Magnetical 

 Properties in Steel and Iron by Percussion. By William Scoresby, 

 Jun. Esq 168 



On the Alloys of Steel. By J. Stodart, Esq. F.R.S. and Mr. Faraday ... 169 



Some Observations on the Buffy Coat of the Blood, &c. By John 

 Davy, M.D. F.R.S 170 



On the Mechanism of the Spine. By Henry Earle, Esq. F.R.S 170 



Of the Nerves which associate the Muscles of the Chest, in the ac- 

 tions of Breathing, Speaking, and Expression. Being a Continuation 

 of the Paper on the Structure and Functions of the Nerves. By 

 Charles Bell, Esq 171 



Experiments and Observations on the Newry Pitch-stone, and its Pro- 

 ducts, and on the Formation of Pumice. By the Right Hon. George 

 Knox, F.R.S 172 



Observations on the Changes the Egg undergoes during Incubation in 

 the common Fowl, illustrated by Microscopical Drawings. By Sir 

 Everard Home, Bart. V.P.R.S 172 



Some Observations on Corrosive Sublimate. By John Davy, M.D. 

 F.R.S ; 173 



On the State of Water and Aeriform Matter in Cavities found in cer- 

 tain Crystals. By Sir Humphry Davy, Bart. P.R.S 174 



Some Experiments on the Changes which take place in the fixed Prin- 

 ciples of the Egg during Incubation. By William Prout, M.D. F.R.S. 175 



On the Placenta. By Sir Everard Home, Bart. V.P.R.S 176 



Of the Geographical Situation of the Three Presidencies, Calcutta, 

 Madras, and Bombay, in the East Indies. By J. Goldingham, Esq. 

 F.R.S 176 



Of the Difference of Longitudes found by Chronometer, and by corre- 

 spondent Eclipses of the Satellites of Jupiter ; with some supple- 

 mentary Information relative to Madras, Bombay, and Canton ; as 

 also the Latitude and Longitude of Point de Galle and the Friar's 

 Hood. By J. Goldingham, Esq. F.R.S 177 



Observations on the Genus Planaria. By J. R. Johnson, M.D. F.R.S. 177 



Some Experiments and Researches on the Saline Contents of Sea- 

 water, undertaken with a view to correct and improve its Chemical 

 Analysis. By Alexander Marcet, M.D. F.R.S 178 



On the Ultimate Analysis of Vegetable and Animal Substances. By 

 Andrew Ure, M.D. F.R.S 179 



1823. 



The Croonian Lecture. Microscopical Observations on the Suspen- 

 sion of the Muscular Motions of the Vibrio tritici. By Francis 



Bauer, Esq. F.R.S. F.L.S. and H.S page 179 



On Metallic Titanium. By W. H. Wollaston, M.D. V.P.R.S 180 



On the Difference of Structure between the Human Membrana Tym- 

 pani and that of the Elephant. By Sir Everard Home, Bart. V.P.R.S. 181 



