ADVERTISEMENTS. 



BY ROYAL 



LETTERS PATENT. 



WEEKS'S UPRIGHT TUBULAR BOILER. 



With Patent Duplex Compensating Improvements. 



Is indestructible. Its average durability is twenty years. It is guaranteed by 

 insurance for ten years. Can be easily cleaned out. 



Either half of the Boiler may be worked separately. This Boiler can be 

 periodically cleaned out, without the water being withdrawn from the apparatus. 

 A failure is impossible. 



A lithograph plan of the largest hot-water apparatus on record, erected by 

 J. Weeks & Co., at Manley Hall, Manchester, sent free by post on application. 



Weeks's Patent Duplex Boiler is the only one to which a First Clnss \ 

 Certificate was awarded at the Royal Botanic Exhibition, Regent's Park, July, 1870. ' 

 Weeks's Book of Designs (12th Edition) post free. 



J. WEEKS & Co. 



HORTICULTURAL BUILDERS, AND HOT WATER APPARATUS MANUFACTURERS, 



KING'S ROAD, CHELSEA, LONDON, W. 



