Ixviii PROCEEDINGS OF THE 



And in this fo.rm it lias continued till now, at first endeavouring 

 to issue a part for each month, half Zoology and half Botany, 

 forming two volumes for each year ; but the parts having gradu- 

 ally got much in arrear, and one branch having had often to wait 

 for the other, the custom of assigning a specific month for each 

 issue has been discontinued ; the Zoology and Botany generally 

 appear separately at irregular intervals ; but six parts continue to 

 form a volume, and a new series is commenced after every twenty 

 volumes ; copious indexes, both of subjects and of authors, being 

 given to every volume as well as to every series. It is now in the 

 third volume of tlie fifth series, or ninety- third of the whole worlc. 

 Besides occasional reviews or translations, it contains throughout 

 many most valuable original papers in every department of both 

 sciences, with the great advantage that neither the zoologist nor 

 the botanist has to encumber his shelves with what does not relate 

 to his own branch. 



De Eerussac's useful Bulletin for four years previous to 1824 

 included all sciences in one publication ; but in that year a divi- 

 sion was made into eight separate series, published in numbers, 

 forming one or two annual volumes, octavo, for each series. The 

 Bulletin des Sciences Naturelles et de Greologie was carried on 

 through twenty-six volumes, from 1824 to 1831. Although chiefly 

 consisting of bibliographical notices, abstracts, and intelligence, 

 it also contained occasionally short communications, both in 

 Zoology and Botany, not elsewhere published. 



The Magasin de Zoologie, conducted by Gruerin-Meneville, was 

 commenced in 1831, to be issued in monthly parts, forming two 

 or three annual volumes, octavo, with numerous plates. The 

 parts, however, were very soon much in arrear ; and after the first 

 two years only one volume was ascribed to each year, and in 1839 

 a new series was commenced with the enlarged title of Magasin 

 de Zoologie, d' Anatomic comparee et de Paleontologie, on the 

 same plan of an annual volume in six parts. This Magazine 

 admitted only original papers, but a bulletin was occasionally 

 added ; and from 1838 the same editor published a monthly Jour- 

 nal, also in octavo, entitled Revue Zoologique par la Societe Cu- 

 vierienne, devoted to reviews, bibliographical notices, and other 

 zoological intelligence, together with abstracts of zoological papers 

 read at the Academic des Sciences or other scientific bodies at 

 Paris. Both these periodicals again got much in arrear, especially 

 the Magasin; but at length (in 1849) the editor having succeeded 

 in obtainins: from G-overnment that assistance which is so fre- 



