1gO New Publication’: 
flimulus, as conductors of eleétricity, as celina le a alle 
by the effects of the i imiagina tion Proveg 
Philofa ophical Tranfactions of the Royal Socicty of London for 
the Year 1798,, Part Il. 
This part; which was delivered to the members a few 
days ago, contains the following papers : OPM das 
A Difguifition on the Stability of Ships. By George At~: 
wood, Efg. FP. RvS.—Quelques Remarques d’Optique, prin- 
cipalement rilatives 4 Ja Reflexibilit: des Rayons de la 
Lumiere. Par P, Provoft, Profeffeur de Philofophie 4 Geneve, 
&e. &c. &c. » Communicated by Sir Charles Blagden, 
Knt. F. R. S:—An Account of the Orifice in the Retina of 
the Human Eye, difcovered by Profeflor Semmering. To. 
which are added, Proofs of this Appearance being-extended 
to the, Eyes of other Animals. By Everard Home, Efq. 
PF, R.S:—A Defcription of a very unufual Formation of the 
Human Heart. By Mr. James pegs Surgeon, Commu- 
" nicated by Matthew Baillie, M.D. P. R.S.—Account of 
a fingular inftance of Atmofpheric ave ae In a Letter 
from William Latham, Efg. F.R.S. and A.S. to the Rev. 
Henry Whitfield, D.D. F.R.S. and A.S.—Account of a 
Tumour found in the Subftance of the Human Placenta. 
By John Clarke, M. D. Communicated by the Right Hon. 
Sir Jofeph: Banks, Bart. K. B. P. R. S.—On the Roots of 
Equations. By James Wood, B.D. Fellow of St. John’s 
College, Cambridge. Communicated by the Rev. Nevil 
Mafkelyne, D.D. F.R.S. and Aftronomer Royal.—Gene- 
ral Theorems, chiefly Porifms, in the Higher Geometry. 
By Henry eadealagi jun. Efq. Communicated’ by’ ‘Sir 
Charles Blagden, Kt. F. R. S.—Obfervations of the Diurnal 
Variation of the Magnetic Needle inthe Ifland of StHe+ 
lena; with a Continuation of the Obfervations at Fort Marl- 
borough, in the Ifland of Sumatra. By. John“ Macdonald, 
Efq.. In a Letter to the Right Hon. ‘Sir Jofeph Banks, 
Bart. K. B. P. R.S.~~On the Corundum Stone from Afia. 
By 
ee 
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