have still to regret that too many genera are wanting in 

 this department to make it adequate to its principal 

 purpose, that of assisting those who pursue the study of 

 Conchology. 



The Herbarium has received considerable accessions 

 of native plants, and the British Collection is now divided 

 and arranged in several volumes, so as to illustrate 

 the respective systems of Linnaeus and Jussieu ; by 

 which means the botanical student will be greatly assisted 

 in the prosecution of his labours ; there are, however, 

 many genera and species of which specimens are still 

 wanting. In this, therefore, as in every other depart- 

 ment, the Council earnestly solicit the continued exer- 

 tions of the members, since by such means alone can the 

 Museum be made to keep pace with the continuing pro- 

 gress of physical science, and prove to all observers that, 

 as in former ages, and in other countries, so at the 

 present day, and in this town, the fostering hand of com- 

 merce is the steady and generous promoter of Philosophy 

 and Literature. 



The Library of the Institution has received a pleas- 

 ing addition in the prose works of a distinguished orna- 

 ment of our Literature, recently deceased, which have 

 been presented by Dr. Disney L. Thorp, and the new 

 edition of the Treatise on the Climate of London, in 3 

 vols. 8vo., by its Author, Luke Howard, Esq. F.R.S. ; 

 in most other respects its history presents the same blank 

 which has characterised it in so many of our Annual 

 Reports. 



In the course of the session two highly interesting 

 courses of lectures have been delivered, the first by 



