Thomas & Richard Willats. 7 1 



JUST PUBLISHED, 



A THERMOMETRICAL TABLE, on the Scales of Fahrenheit, 

 Reaumur, and Centigrade ; comprising the most remarkable Phe- 

 nomena connected with Temperature in relation to Climatology, 

 Physical Geography, Chemistry, and Physiology. By Alfred S. 

 Taylor, Lecturer on Chemistry, etc. in Guy's Hospital. 



Price, in Sheet, with Explanatory Pamphlet, Is, 6d. ; 



Mounted on Canvas, and Folded in Case, 3s. ; or, Mounted on 

 Rollers, 4s. 6d. 



T. & R. WILLATS, 98, CHEAPSIDE. 



Dedicated, by express permission, to H. R. H. Prince Albert, 



ELEMENTS OF ELECTRO-METALLURGY; or, Art of Work- 

 ing in Metals by the Galvanic Fluid, containing full Directions for 

 conducting the Electrotype. Second Edition. By ALFRED 

 SMEE, F. R. s. etc. 



T. & R. WILLATS having purchased the remaining portion of the 

 above valuable and interesting Work of the Publisher on very advan- 

 tageous terms, are enabled to offer it to the Public at the reduced 

 price of 5s. 



WILLATS'S SCIENTIFIC MANUALS. 

 SCIENTIFIC MANUAL. No 1. 



(Second Edition with Addenda.} 



PLAIN DIRECTIONS FOR OBTAINING PHOTOGRAPHIC 

 PICTURES by the Calotype, Energiatype, and other Processes, 

 on Paper, including the Chrysotype, Cyanotype, Catalissisotype, 

 Chromotype, Gaudinotype, etc. etc. with the latest improvements. 

 Price One Shilling. 



