THE PRUSSIAN ACADEMY OF SCIENCE. 



277 



German Law. Under the auspices of the academy the works of Jacobi, 

 Dirrichlet, Steiner, Weierstrass and Kronecker will soon see the light. 

 A comprehensive work, taking in the entire animal world, valuable for 

 the unity of its plan and its accuracy has been prepared by Schulze. 

 The income of the Humboldt fund has been expended for the most 

 part on costly journeys undertaken for scientific purposes. Thus 

 Hansel was absent in South America from 1863 to 1867, studying the 

 pampas of Argentina, exploring the bone caves of southern Brazil and 

 observing the remains of mammals. Sehweinfurth, the botanist, de- 

 voted himself, first at his own cost, as early as 1863, to the study of the 



Hermann von Helmholtz. 



flora of the Xile valley. He went as far as the borders of Abyssinia 

 and the Soudan. On his second journey in 1868, for which he re- 

 ceived aid from the academy, he explored Lake El Ghasel, the region 

 round about Xjam Xjam and Monbutta botanically, geologically and 

 anthropomorphic-ally. He returned to Berlin in 1871 and the conclu- 

 sions he formed from his studies on his travels are found in the 'Pro- 

 ceedings' of the academy for the years 1870-72. Buchholz, the zoolo- 

 gist, went to equatorial Africa in 187-1, and sent home a vast amount 



