430 New Publications. 



to shew, that the form of the filamental appendages in that species 

 indicates a passage from the true Violets to the Pansies. 



3. Professor Graham stated, that some months ago he had re- 

 ceived from Dr Christison a root of Ipomcea purga, now believed 

 to be the plant which yields the true Jalap of commerce ; and that 

 when cultivated in the stove it had grown freely and produced 

 flowers. It is altogether a different plant from that previously in 

 cultivation. 



\^th December. — Professor Graham, President in the Chair. — 

 1. Mr Brand read a paper containing remarks on the Statistics of 

 British Botany, intended to illustrate the plan proposed to be adopted 

 in the formation of the Botanical Society's British Herbarium. 2. 

 Mr Forbes read an account of an Excursion to the Mountains of 

 Ternova in Carniola, in company with Signor Tommasini of Trieste. 



10^^ January 1839. — Professor Graham, President in the Chair. 

 — 1. Mr Forbes read some observations on certain Continental 

 Plants allied to British Species. 2. Mr Herbert Giraud read the 

 first part of a paper on the Structure and Functions of Pollen. 3. 

 Mr Brand read a communication explanatory of a scheme which he 

 proposed for the publication of a work under the Society's direc- 

 tion, intended to give a general but comprehensive view of the 

 whole range of Botanical science. 



\Ath February. — Professor Graham, President in the Chair. — 

 1. Mr Herbert Giraud read the second part of his paper " On the 

 Structure and Functions of Pollen." 



NEW PUBLICATIONS. 



1. The Silurian System, founded on Geological Researches, S;c, ; by Ro- 

 derick Impey MuRCHisoN, Esq. F.R.S., &c. &c. &c. Two volumes 

 quarto, with numerous pictorial and geognostical engravings, and a 

 Geological Map. Murray, London. 1839. 



Any attempt on our part to lay before our readers a critical 

 analysis of these valuable volumes, would engage us in the dis- 

 cussion of almost every topic of interest connected with geolo- 

 gical science, which, ho v. ever, the limited space of this Jour- 

 nal forbids, and the already great celebrity of the work, now 

 in the hands of every geologist, renders entirely unnecessary. 

 Mr Murchison, however, we may remark, now enjoys the plea- 

 sure and satisfaction, it is true after years of incessant labour in 



