MeLVILL: BRITISH PIONEERS IN CONCHOLOGICAL SCIENCE, 203 



His connection with the British Museum lasted well-nigh 

 half-a-century. His wife was as accomplished a naturalist as himself, 

 and he has immortalized her name in Haliotis emmcB (Gray) and 

 Valuta Maria-eimna (Gray), the latter a shell still unique, and 

 of which the only specimen is in the National Collection. Dr. 

 Gray, a man of multifarious attainments, distinguished in 

 nearly every branch of Zoology, yet found time to interest him- 

 self in what is now called Philately, the collecting of Postage 

 Stamps, and one of his last works was the publication of a guide 

 to the collection of these articles. He died 1875, aged seventy- 

 four, his widow surviving him one year only. 



About 1825-1835, the celebrated naturahst. Dr. VV. Macleay, 

 founder of what is called the circular system of classification, 

 published from time to time certain 'Anatomical Observations ' 

 on the Mollusca. 



E. Crouch in 1827 brought out an Illustrated Introduction 

 to Lamarck's Conchology, with 22 plates, some of which are 

 very beautifully delineated. 



Mr. William Wood, of whom brief mention has already 

 been made, commenced in 18 18 and concluded in 1828 an 

 important work entitled ' Index Testacealogicus, or a Catalogue 

 of Shells, British and Foreign.' This work supplanted his pre- 

 viously conceived ' General Conchology,' of which the first 

 volume only was published. In this were figured nearly 3,000 

 specimens of shells, for the most part accurately drawn and 

 figured, although the reduced size of many of them renders them 

 less valuable to science than they would otherwise have been. 

 Mr. Sylvanus Hanley in 1855 pubhshed a new and entirely 

 revised edition. Mr. Wood was also known as an entomologist, 

 and published similar works on the Lepidoptera to those we 

 have just mentioned on Conchology. Pie died May 26th, 1857, 

 aged 84, and was, I believe, related nearly to the late Rev. J. G. 

 Wood, whose popular works on Natural History have done so 

 much good service. 



Dr. (afterwards Sir Charles) Lyell in 1829 brought out an 



