LINNEAN SOCIETY OF LONDON. XXXV 



tracts of the papers read) in a more convenient octavo form, which 

 could be issued at much shorter intervals than the quarto Transac- 

 tions. But as they also include at first short communications 

 only, but subsequently longer papers also in extenso, and as each 

 branch of science or literatiu'e is encumbered with all bhe others, 

 the advantages of the compact form are lost. Under the title of 

 Bulletin de I'Academie, &c., twenty-three volumes of the first 

 series, from 1832 to 1856, with one of index, and seventeen of the 

 second, from 1857 to 1864, had so grown in thickness that, from 

 the sixth of the first series (1839), each one is divided into two 

 parts, with separate paging, so as practically to make two 

 volumes each year. The zoologist has thus to seek in a mass of 

 above seventy volumes for a few papers by "Wismael, Beneden, 

 De Selys-Longchamps, Udekem, and others ; and although the 

 botanist may find Martens and Galeotti's enumeration of Mexi- 

 can plants occupying a considerable portion of the volumes for a 

 single year (1847, tenth of the first series), there are several 

 smaller contributions, independently of those relating to Belgian 

 botany, that are so scattered and lost in the mass of heterogeneous 

 matter, that they are almost universally overlooked. 



The Societe Eoyale des Sciences de Liege, established in 1835, 

 was divided into two sections — Sciences d' Observation, and Sciences 

 de Calcul ; but the papers read in the two sections were mixed in 

 their published Transactions, entitled Memoires de la Societe 

 Eoyale des Sciences de Liege. Eighteen volumes, large 8vo, 

 with plates, are dated from 1844 to 1863. More than one-third 

 of them are devoted to Entomology, by Lacordaire, De Selys- 

 Longchamps, Chapuis, Candeze, and others, some papers filling 

 one, two, or even three volumes. There are. also a paper by 

 Beneden on the Ears of Birds of Prey, by Malherbe on a Brazilian 

 JPicus, by Drouet on Erench MoUusca, and one botanical one — 

 Decaisne on Diplosiplion. 



The Bulletins de la Societe Eoyale de Botanique de Belgique at 

 Beussels form a thin octavo volume of two or three parts in each 

 year, with an occasional plate. Three volumes have been received, 

 from 1862 to 1864, hitherto confined to either local or crypto- 

 gamic Botany. 



Societe de Sciences ISTaturelles, Grand-duche de Luxembourg, 

 afterwards Societe des Sciences Naturelles du Grand-duche de 

 Luxembourg, is the sole title of the Transactions published by the 

 Society at Luxemboueg in octavo. There are seven parts, or years 

 dated from 1853 to 1864, containing, amongst a great variety of 



c2 



