George James Allman. 



27 



single specimens or fragments of specimens, insufficiently described 

 and very imperfectly investigated. Although this kind of work still 

 goes on, to Allman and two or three of his contemporaries the credit 

 is due of having checked it. His studies in the group of Hydrozoa 

 led him to the conviction that a species cannot be regarded as being 

 satisfactorily defined until the whole of its life-history is known, and 

 it may b observed that in his monograph he carefully states the 

 characters of both the trophosome and gonosome stages of the species 

 of Hydrozoa he investigated. 



The general appreciation of Allman's investigations is shown by 

 the honours he obtained. He was elected a fellow of the Koyal 

 Society in 1854, served on the Council of the Society from 1871-1873, 

 and received its gold medal in 1873. He was President of the 

 Linnean Society fro'm 1874-1881, and President of the British 

 Association for the Advancement of Science at the Sheffield meeting 

 in 1879. He received the Brisbane gold medal of the Royal Society 

 of Edinburgh in 1877, the Cunningham gold medal of the Royal Irish 

 Academy in 1878, and the gold medal of the Linnean Society in 1896. 



S. J. H. 



