3C6 Acadtyny of Sciences rJ Lisbon. 



of these Experiments to a Series of Observations on the 

 Nature and Magnitude of Mr. Harding's lately discovered 

 Star. Bv William Herschel, LL.D. F. R.S.— An Essay 

 on the Ooliesion of Fluids. By Thomas Young, M. D. 

 For. Sec. R.S. — Concerning the Slate in which the true 

 Sap of Trees is deposited during Winter. In a Letter from 

 Thomas Andrew Knight, Esq. to the Right Hon. Sir Jo- 

 seph Banks, Bart, K.B. P. R.S.— On the Action of Platina 

 and Mercury upon each other. By Richard Chcnevix, Esq. 

 F.R.S. M.R.I. A. Sec. — An Investigation of all the Cha:nges 

 of the variable Star in Sobieski's Shield, from Five Years' 

 Observations, exhibiting its proportional illununated Parts, 

 and its Irregularities of Rotation ; with Conjectures respect- 

 inn- unenliiihtencd heavenly Bodies. By Edward Pigott, 

 Esq. In a Letter to the Right Hon.' Sir Joseph Banks, 

 K.B. p. R.S. — An Account of some analytical Experiments 

 on a mineral Production from Devonshire, consisting prin- 

 cipally of Alumine and Water. By Humphry Davy, Esq. 

 F.R.S. Professor of Chemistry in t'lie Royal Institution. — 

 Experiments on Wootz. By Mr. David Mushet, Commu- 

 nicated by the Right Hon. Sir Joseph Banks, K.B. P. R.S. 

 — Appendix. — Meteorological Journal kept at tha Apart- 

 ments of the Royal Society, by Order of the President and 

 Council. 



ACADEMY OF SCIENCES AT LISBON. 



This society ])roposed the following subjects for prizes on 

 tlie ISth of January last: 



1st, The subjects proposed by the class of natural history 

 are : the natural history and physical description of any 

 province or considerable district of Portugal, or of any part 

 of the Portuguese foreisn possessions ; also an economical 

 description of the same kind. 



In the department of agriculture, a particular prize is of- 

 fi'red for a popular introduction, grounded on experience, 

 to the improvement of agriculture in Portugal, written for 

 asriculturisls. 



^Another prize is proposed bv a member of the academy, 

 for an acconnt of the phvslcal and moral causes of the 

 neak'ct of agriculture in Portugal, and of the most effectual 

 mclins of applvino; a rcujedy ; also a description of the pre- 

 sent state of the breeding of sheep in Alcntejo, and tlie 

 cause of the increase or decrease of these animals since the 

 middio, of tlie 18th century; with an accoimt of the most 

 connnon di.-cases among slieep. 



In the department of medicine: an account of the sym- 

 1 pton;s 



