JUST PUBLISHED, 

 BY THOMAS AND RICHARD WILLATS, 



AND 



98, CHEAPSIDE, LONDON. 



A THERMOMETRICAL TABLE, 



ON THE SCALES OF 



FAHRENHEIT, REAUMUR, AND CENTIGRADE. 



Comprising the most remarkable Phenomena connected with Tem- 

 perature in relation to Climatology, Physical Geography, 

 Chemistry, and Physiology. 



BY ALFRED S. TAYLOR, 

 Lecturer on Chemistry, Sf-c. in Guy's Hospital, 



Price, in Sheet, with Explanatory Pamphlet, Is. Gd. 



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



Rollers, 4s. 6d. 



PHOTOGRAPHIC MANUAL, No. I. 



PLAIN DIRECTIONS FOR OBTAINING PHOTOGRAPHIC 



PICTURES BY THE CALOTYPE AND ENERGIATYPE 



PROCESSES. 



Price Sixpence. 



PHOTOGRAPHIC MANUAL, No. II. 



PRACTICAL HINTS ON THE DAGUERREOTYPE. 



Being simple Directions for obtaining Portraits, Views, Copies of 

 Engravings and Drawings, Sketches of Machinery, &c. &c. by the 

 Daguerreotype Process ; including the latest improvements in 

 Fixing, Colouring, and Engraving the Pictures ; with a description 

 of the various Apparatus, Illustrated by Engravings. Price Is. 



