686 



Notices of Books. 



[Oct., 



NOTICES OF BOOKS. 



Modern Pig- Feeding.— (Cambridge : School of Agriculture and 

 Institute at. Animal Nutrition.) This pamphlet deserves to be read 

 carefully by every feeder of pigs. Mr. K. J. J. MacKenzie, the University 

 Reader in Agriculture and Director of the University Farm, and 

 Mr. John Fleming, give an account of four years' experiments in pro- 

 ducing bacon on war-time rations, that is, rations in which anything that 

 could possibly be used directly for human food was absent. For an 

 account of the methods adopted in thus weaning, rearing and fattening pigs, 

 and for opinions expressed by various experienced housewives regarding 

 the resulting bacon, readers should consult the pamphlet itself, which may be 

 obtained for the cost of postage (2d.) from the Secretary, School of 

 Agriculture, Cambridge. It can also be obtained by agriculturists readout 

 in the counties in the Eastern Province, by applying either to County 

 Secretaries for Education, or County Agricultural Organisers. 



The main form of concentrated food was palm kernel cake, which was used 

 with ■BOONS for the feeding of breeding sows, for weaning and rearing young 

 pigs (to which it was given crushed into meal) and for fattening hogs. As 

 palm kernel cake is at present one of the cheapest feeding stuffs on the 

 market, and as prices still preclude any return to pre-war standards of feeding, 

 the value of Mr. Mackenzie's and Mr. Fleming's work is evident. 



Two other points of great practical importance, to which Professor 

 T. B. Wood refers in his interesting preface, are : (1) The striking effect of 

 a small addition of dried blood to the palm kernel ration of young pigs: and 

 (-) The gieat effect caused by adding maize to palm kernel cake in fattening 

 bacon hogs. It would seem probable that the dried blood provided the 

 vitamines absent from the palm kernel cake, and when it came to fattening, the 

 maize supplied the fat factor, which was much needed, owing to the deticiency 

 of carbohydrates. These points, however, by no means exhaust the interest 

 of this little pamphlet, which is stored with practical wisdom. The pages 

 dealing with grazing also deserve very careful reading. 



Insect Pests and Fungus Diseases.— P. J. Fryer. (London : 

 Cambridge University Press, 1920, 45/- net.) This volume contains elementary 

 explanatory material on insects and plant structure, and deals also with various 

 insect and other pests on the zoological side attacking fruit and hops. It is 

 divided into two parts. Part I. deals with the insect pests aud insecticides, 

 and Part II. with fungus diseases and their control. 



The information is classified under headings, dealing with preventive 

 measures, remedies and a calendar of treatment, followed by sections treating 

 fully with insecticides and fungicides and their use. Useful tables are given 

 for estimating the quantity of insecticide required. A few pages are devoted to 

 insects beneficial to agriculture. 



There is a section on spraying appliances and methods, followed by a copious 

 spraying calendar, tables of weights, measures and capacity, pest duration. &c. 

 The book is indexed and fully illustrated, including some coloured plates. 

 The photographic illustrations, together with Plates 5 to 8 tak^n in colour 

 directly from the insects, will prove useful for diagnosis and identification. 



The author of this volume is the chemist to the Yalding Manufacturing 

 Company. 



