CONTENTS. 



CONTENTS of NUMBER XXX. 



Page 



I. A fhort View of the Obfervations which have been made 

 at different Times on the Luminous Appearance of the^Sea. 

 Read in the Phyfical Society of Gbttingen, by J. G. L. 

 Blumhoff - 97 



II. On the Submcrfion of Swallows in Autumn - 107 



III. Account of a fatal Accident which happened to a Tra- 

 veller on the Glacier of Buet ; with fome Cautions to thofe 

 who through Curiotity may vilit the Mountains of SwnTer- 

 land, and "particularly the Glaciers. By M. A. Pictet, 

 Profeflbr of Philofopiiv - rj ■ " ' , '• .1 ,0 9 



IV. A cheap and efficacious Method for deftroying Rats 

 and Mice ; recommended to the Agriculture Society of Man- 

 chefter by Mr. C. Taylor, Secretary to the Society for the 

 Encouragement of Arts, Manufaaures, and Commerce 118 



V. A brief Examination of the received Doctrines refpea- 

 iug Heat or Caloric. By Alexander Tilloch. Read before 



the Afkefian Society, December 1799 " \ . XI 9 



VI. Experiments on the Solar and on the Icrreftnal Rays 

 that occaiion Heat ; with a comparative View of the Laws to 

 which Light and Heat, or rather the Rays which occafion 

 them, are fubject, in order to determine whether they are the 

 feme, or different. By William Herschel, LL.D. F.R.S. 126 



VII. An Examination of St. Pierre's Hypothefi? refpeaing 

 the Caufe of the Tides, which, in oppofition to the received 

 Theory, attributes them to fuppofed periodical Effnfions of 

 the Polar Ices. By Samuel Woods, ECq. Read before 



the Afkeflan Society, November 5, 1799 - - , *34 



VIII. Account of a new Operation, lately performed with 

 Succefs in France, for reftonng Sight in certain Caies of 

 Bh'ndnefs. By C. Demouks - -. n„"m l4S 



IX. On the Cultivation and Ufe of the Syrian Silk-Plant. 

 By J, A. Mollhr, Direaor of the Weftphalian Patriotic 

 Society - - * " . * , . , " ., , r 49 



X. On feveral new Properties difcovered m phofphonled 

 HydiogenGas. By C. Raymond, Profeflbr of Chemiftry 



in the Central School of Ardeche - - . - *54 



XI. On the general Nature of Light. By Mf. Robert 

 Heron. Communicated by the Author . - i6t 



XII. Some Account of Frederick Augustus Eschev, 

 who was fwallowed up in a Fiffure of the Snow in the Glacier 



of Buet -'".."- ; , , " :* ' ,6 4 



XIII. On the Difcovery of that Salt known under the 

 Name of Seignette's Salt (Tartrite of Soda): By Profeflor 

 BtCRMANN • i66 



