An Economical and Efficient Light 

 for Farms and Country Houses. 



The 



Willett 



Light 



For economy, efficiency and convenience the ideal 

 lighting system for the Farm, Country House, 

 Estate, etc. is the Willett Light. 



The most remotely situated dwclhng or building 

 of any description can be illuminated with this 

 bright, clieerful light at a lower cost even than 

 oil lamps. The many advantages of the Willett 

 Light compared with oil lamps are fully explained 

 in the Booklet " A.T " which is free on request. 



The Willett system is largely used for laboratories. 

 With adapted burners it can be used for every 

 laboratory operation usually undertaken with the 

 aid of coal-gas. 



The Willett Light is a perfected system of petrol- 

 air gas lighting. The gas is produced by the 

 Willett Generator from ordinary No. i motor-car 

 petrol upon which the tax is refunded. 



The Generator is entirely automatic in action 

 and absolutely devoid of compUcated mechanism. 

 The slight power needed is derived from weights 

 on the principle of the grandfather clock. No 

 expert knowledge whatever is necessary. To 

 instal the Willett Light means a great saving io 

 labour. 



A demonstration of the Willett Light will be 

 gladly given at the showrooms. 



Write to-day for Booklet "A.T" and learn how 

 really economical is this eilicient and convenient 

 systeni. 



W. Willett, 39a, Sloane Sq., London, S.W. 



Telephone: Keftsin^ton 4660 i^Fonr lints). 



CAMBRIDGE UNIVERSITY PRESS 

 Manuring for Higher Crop Production. By E. j. Russell, 



D.Sc (Lond.). With 16 illustrations. Demy 8vo. ;is net. 



CAMBRIDGE AGRICULTURAL MONOGRAPHS 

 Inorganic Plant Poisons and Stimulants. ByWnnpEKD 



E. BBEKOKcay, D.So., F.L.S., Fellow of University College, London (Rothamsted 

 Experimental Station). Royal 8vo. With 19 illustrations. Ce net. 



THE CAMBRIDGE FARM INSTITUTE SERIES 



Farm Accounts. By C, S. Orwin, Hon. M.A. (Oxon.), Director of 

 the Institute for Research in Agricultural Economics in the University of Oxford. 

 Crown 8vo. Ss net. 



A Student's Book on Soils and Fertilizers. By 



E. J. RnsSElx, D.Sc. down 8vo, With 34 illustrations. 3a 6d net. 



Pfoapedusea of these two series, shoiving further volumes in preparation, 

 will be sent on application. 



Cambridge University Press 

 C. P. Clay, Manager: Fetter Lane, London 



