855 



given by a plane board. The apparatus is well adapted for use where 

 the process of desiccation can be expedited by a current of hot air. 

 The clear description is rendered still more clear and descriptive by 

 the aid of two wood-cuts.] 



On the Definition of Species, Sub-species, Races and Simple Va- 

 rieties. By M. Chevreul. [Translation from the ' Annales des Sci- 

 ences Naturelles,' 1846.] 



On the Fructification and Germination of the higher Cryptogamia. 

 By W. Hofmeister. [Translation from the ' Botanische Zeitung,' 

 Nov. 9, 1849.] 



A list of Plants growing in or near Farnham, Surrey. By Walter 

 W. Reeves. 



Literature : Contents of various botanical periodicals. Proceed- 

 ings of Societies. 



Miscellanea : Records of Localities ; M. Alphonse De Candolle's 

 resignation as Professor in the Academy, and Director of the Garden, 

 at Geneva ; Culture of Madder in Greece j Obituary, Count J. C. von 

 Hoffmansegge. 



Contents of 1 Hooker 's Journal of Botany, No. 15, March, 1850. 



Botanical Excursion on the Amazon, S. America. By R. Spruce, 

 Esq. 



Decades of Fungi. By the Rev. M. J. Berkeley. 



Extracts from Dr. J. D. Hooker's Letters. Continued. 



Botanical Information : Professor De Candolle ; Dr. Asa Gray ; 

 Bourgeau's new journey to Spain, as botanical collector ; Death of 

 Dr. Koch, and of John Nuttall, Esq. 



Botanical Society of London. 



Friday, February 1, 1850. Arthur Henfrey, Esq., V.P., in the 

 chair. 



The Secretary read a letter from the President nominating the 

 chairman Vice-President, in the room of the late Edward Doubleday, 

 Esq. 



Donations of British plants were announced from Mr. Borrer, the 



