made us acquainted with larval forms, with relations between the 

 larva and future being ; and with modes of existence ; such as nature 

 has not yet been found to present in any other part of the animal 

 kingdom. Finally, with the light thus derived from the study of 

 their development, Professor Miiller has subjected the organization 

 of the entire class of Echinoderms, both recent and fossil, to a 

 thorough revision, and has added much that is new, as well as cleared 

 up much that was obscure, in regard to their economy, structure, and 

 homologies. It is to these researches, which occupy seven memoirs 

 in the ' Transactions of the Royal Academy of Sciences of Berlin,' that 

 more special reference is made in the award of the Medal. Besides 

 their other claims to distinction, they may be justly regarded as 

 revealing a new order of facts in the history of animal development." 



Soon after his settlement in Berlin, Miiller established the " Archiv 

 fur Anatomic und Physiologic," which goes by his name ; and he con- 

 tinued the publication till the time of his death. Besides containing 

 numerous original contributions of his own, and the valuable Annual 

 Reports on the progress of these sciences, drawn up by himself or 

 his able assistants, this Journal, following after " Meckel's Archives," 

 has formed the principal medium of publicity for the labours of the 

 leading physiologists of Germany during the period of its existence ; 

 and the establishment and continued superintendence of it by Miiller, 

 in the midst of other laborious employments, must be ever regarded 

 as an important service rendered to science. 



What remains of Miiller' s personal history may be soon told. 

 Only two events, so far as we know, after this time broke in upon 

 the even tenour of his life. In 1848 he was Rector of the University, 

 in a time of civil commotion, when political agitation distracted the 

 academic body, and both students and professors left the lecture 

 room to equip themselves as soldiers. Miiller, who in youth had 

 been an ardent " Bursch," was now a sober conservative, and in his 

 mind the aspect of affairs threatened disaster to the State and the 

 University. His situation was one of difficulty and not without 

 peril ; he strove manfully to maintain authority, though with little 

 success ; but even those who took a different view of passing events 

 paid a willing tribute to his honesty of purpose and the personal 

 courage he displayed in most trying circumstances. The other 

 remarkable occurrence in Miiller' s latter years was the following. 



