VI 



The thanks of the President and Council are due to several members of the 

 Catalogue Committee who have revised the proofs with especial reference to 

 those portions that i-elate to the departments of science with which they are 

 particularly conversant. 



They also offer their best thanks to the authorities of the British Museum, 

 Patent Office, Royal School of Mines, Royal College of Surgeons of England, 

 Medical and Chirurgical, Geological, Zoological, Linnean, Chemical and other 

 Societies for the facilities of access to their libraries which have been afforded 

 during the preparation of the Catalogue. 



In conclusion they must express their acknowledgment of the valuable 

 services rendered by the late Mr Henry White, his son Mr Alfred White, and 

 Mr Henry Holt, who superintended the compilation of these volumes, and by 

 Miss Chambers, their successor, who has seen the work through the press. 



