BOOKS BY THE SAME AUTHOR 



The Fertility of the Soil. With 9 illustrations. Royal i6mo. 

 Cloth, is 3d net; Limp lambskin, 2s 6d net. Cambridge Manuals of 

 Science and Literature. 



A Student's Book on Soils and Manures. With 34 illustrations. 

 Crown 8vo. 33 6d net. Cambridge Farm Institute Series. 



Lessons on Soil. With 58 illustrations. Large crown 8vo. 

 is 6d net. Cambridge Nature Study Series. 



CAMBRIDGE FARM INSTITUTE SERIES 



GENERAL EDITORS: Professor T. B. WOOD, M.A., and 

 E. J. RUSSELL, D.Sc. 



The volumes of this series are intended to meet the needs of the many 

 Farm Institutes already in existence or about to be formed. They are in- 

 tended for the average student whose object is to farm, rather than for the 

 exceptional man who wishes to become an agricultural expert. 



Every endeavour will be made to attain a high standard educationally, 

 by training students to take an intelligent interest in their daily work and to 

 appreciate the beauty of the common objects among which their life will be 

 passed. On the other hand the fact that farm students must earn their living 

 on the land will not be lost sight of. 



Now ready 

 Farm Accounts. By C. S. ORWIN, Hon. M.A. 35 net. 



A Student's Book on Soils and Manures. By E. J. RUSSELL, D.Sc. 

 35 6d net. 



In preparation 



Plant Life in Farm and Garden. By Professor R. H. BIFFEN, M.A. 

 The Feeding of Farm Animals. By Professor T. B. WOOD, M.A. 

 Common Fungus and Insect Foes. By F. R. PETHERBRIDGE, M.A. 



Food Economy in War Time. By T. B. WOOD, M.A., and 

 F. G. HOPKINS, M.A , F.R.C.P., F.R.S. Demy 8vo. Paper covers. 6d net. 



"This sixpenny pamphlet probably contains more information of a 

 definitely practical kind on the difficult question of how to economise 

 in the household than anything so far said or written on the subject, 

 and this is saying a good deal.... Women... could learn from this remark- 

 able little pamphlet how to effect those economies in the household which 

 everybody advocates and which so few know how to practise." 



Oxford Magazine 



" It is written by Profs. T. B. Wood and F. G. Hopkins, both of whom 

 can speak with authority, one from the agricultural, the other from the 

 physiological, point of view. It is written in a clear style, such as the 

 man in the street, or, what is more important, the woman in the kitchen, 

 can understand." Nature 



I !>. T. O. 



