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

 Catalogue Committee who have revised the proofs with especial r 

 those portions that relate to the departments of science with whichj 

 particularly conversant. 



They also offer their best thanks to the authorities of the Britis 

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

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

 Societies for the facilities of access to their libraries which have beei 

 during the preparation of the Catalogue. 



In conclusion they must express their acknowledgment of the 

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

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

 Miss Chambers, their successor, who has seen the work through the pres? 



