Royal Society. 147 



and almond; and of tropical drug- or food-yielding species Theohroma 

 cacao, Croton Eluteria and Tiglium, Paullinia sorhiUs, and Mallotus 

 jyhilippinensis. As far as possible the plates have been drawn from 

 living specimens. They are drawn and lithographed by Mr. Elair, 

 a young and rising botanical artist, and are well executed, with 

 abundant structural detail and colouring not overdone, though in 

 some cases (e. g. Mentha viridis and DitjitaJis purpurea) the pictorial 

 effect is marred bj superabundance of shading. The letterpress, 

 both botanical and pharmacological, is full and accurate; and alto- 

 gether the book may be safely recommended as likely to be a com- 

 plete and trustworthy handbook for medical men, chemists, and all 

 who are interested in the subject. 



PROCEEDINGS OF LEARNED SOCIETIES. 

 ROYAL SOCIETY. 



November 25, 1875. — Dr. J. Dalton Hooker, C.B,, President, in 

 the Chair. 



" On the Structure and Relations of the Aleyonarian Heliopora 

 ccerulea, with some Account of the Anatomy of a Species of Sarco- 

 phyton ; Notes on the Structure of Species of the Genera Millepora, 

 Pocillopora, and Stylastcr ; and Remarks on the Affinities of certain 

 Palaeozoic Corals." By H. N. Moselet, M.A. (Oxon.), Naturalist 

 to the ' Challenger ' Expedition, 



Introduction. — The author having undertaken the examination of 

 the Deep-sea Corals dredged during the voyage of H.M.S. ' Chal- 

 lenger,' was led to the study of the structure of corals generally, and 

 especially to the examination of the Milleporidse, which seemed of 

 peculiar interest, since they had been determined by Professor 

 Agassiz to be Hydroids, and had been regarded by him as living re- 

 presentatives of the Palaeozoic Rugosa. Milhpora alcicomis was 

 obtained and examined at Bermuda, and another species of Milh- 

 pora at Zamboangau, Mindanao, Philippine Islands. The examina- 

 tion of these Millepores was found to be beset with great diffi- 

 culties, and the present notes on their structure are to be regarded 

 as only preliminary. Eurther investigations will be made with 

 specimens which it is hoped will be obtained at the Sandwich 

 Islands. At Zamboaugan, Heliopora ccerulea was obtained, and 

 found at once to be an Aleyonarian. Its structure is described in 

 full in the paper. Another Aleyonarian of the genus Sarcopluiton 

 (Lesson) was examined for the purpose of comparison. It proved to 

 present special features of interest, and a general description of its 

 anatomy also is therefore giA^en. Notes are further appended on 

 the anatomy of a species of Pocillopora obtained at Zamboangan, 



