1835.] Scientific Intelligence, 237 



II. — Scientific Association of Germany.'^' 

 The Annual Meeting of this body is to be held this year at Bonn, 

 on the Rhine, from the 17th to the 27th of September, At the 

 meeting last year at Stuttgart, Dr. Christian Freiderick Harles, Privy 

 Councillor of Prussia and Professor of Medicine in the University 

 of Bonn, and Dr. Jacob Noeggerath, one of the Directors in Chief 

 of the Council of Mines for the Rhenish Provinces of Prussia, were 

 respectively chosen President and Secretary of the ensuing Meeting. 



The Committee appointed to superintend the preliminary arrange- 

 ments have already received notice of the intended presence of several 

 of the most eminent men of science in Europe., 



The Geological Society of France meets in the beginning of Septem- 

 ber at Mezieres, and after examining the country there, and around 

 Namu, Liege and Aix la Chapelle, joins the German Association 

 at Bonn. The attraction of such an assemblage will be greatly 

 heightened by the beauty of the country around the place of Meeting, 

 and the neighbouring Siebeugebirge, Laacher See, and Cifel will 

 present especial objects of interest to the Geologist. 



There will be sufficient time to go to Bonn after the Meeting of 

 the British Association in Dublin, and we hope that our own country 

 will be worthily represented in all the departments of physical and 

 medical science. Those who mean to go will do well to give notice in 

 due time ; in order that they may not be disappointed as to accommo- 

 dations. We know that in the true Spirit of German hospitality the 

 Committee are anxious to provide comfortable quarters for all strangers ; 

 but the town is small, and therefore they should get as early notice 

 as possible. Letters should be addressed to Professor Noeggerath. 



III. — Remarks on the Temperature of the Baltic. — Extract of 

 a Letter from Alexander Humboldt to M. Poggendorff, 

 (Pogg. Ann. xxxiii. 233.) 

 Peculiar contingencies of an active life have made me sail over the 

 Pacific and Caspian seas sooner than the Baltic, which lies so near 

 my native country. In two little voyages which I made lately, in* 

 the Russian steam-vessel Ischora, from Stettin to Konigsberg, and 

 in the Prussian steam-vessel, Frederick William, from Konigsberg 

 to Dantzic and Stettin, I occupied myself entirely with the variations 

 of temperature at the surface of the Baltic. The phenomenon of an 

 extraordinary fall of the thermometer, to a point from 48*2 to 51*8 

 Fahr. appeared to me very extraordinary. Perhaps other observers 

 may be more fortunate in discovering the cause of this sudden sinking. 

 While the air on the 24th of August was between 70" '7 and 

 76„-28 F. from lO a.m. to 7 P-™.^ I found the sea at Swinemunde, 

 73 '76, and opposite Treptou, 68"- 54. In the bay south of Swine- 

 munde it was 64o-76. On the 25th, when we were rounding the 

 promontory between Leba and Rixhofter, where the coast approaches 

 nearest to the island of Gotland, the thermometer in the sea fell 

 suddenly to 52°* 16 and 53°-6, the air being 66°*2. We had remained 

 at the same distance from the coast, varying from 1 J to three nautical 

 miles (60 to a degree), and the hours of observation were lOj a.m. 

 and li p.m. I mention the time of the observation and the tempera- 

 * We insert this notice by request. 



