498 Journal of the Department of Agriculture. 



South African Dairyman (P.O. Box 925, Durban). 



6/20 Dairying Demonstration at Cedara, 21st May. OflBcial Notes on 

 Friesland Cattle. The Acid Test for Milk. 



South African Farm Nr\rs (P.O. Box 963, Johanne.sburg). 



6/20 Rand Cattle Farmers' Fight against Anthrax. Red Polled Cattle, 

 by Farmer George. The 1920 Settlers. 



South African Fiuit Grower and Small Holder (P.O. Box 5958, Johannesburg). 

 6/20 The Value of Superphosphate as a Fertilizer, by B. Wulf. French 

 Gardening improved npon. 



South African Gardening and Country TAfe (P.O. Box 3958, Johannesburg). 



6/20 How to Grow Vegetables. The Forming and Pruning of Fruit 

 Trees. Poyits to Observe in Practical Pruning. 



South African Journal of Industries (Government Printer, Pretoria). 



6/20 Fertilizer Production and Natural Fertilizers in the Union, bv 

 C. F. Juritz, M.A., D.Sc. Artificial Stock Foods and their 

 Manufacture, by W. Jarvis Palmer, B.S.A. Vegetable Fats and 

 Oils : IV. — Semi-drying Oils, by Prof. M. Rindl. The Iron and 

 Steel Industry. Transport Methods in South Africa : IV. — 

 Ruril Transport {continued), by Sir Wm. Hoy, Kt., C.B. 

 Products of the Peanut. f 



South African Foultry Hevieio and Small Holder (Johannesburg). 



6/20 The Ancona, by W. G. Looney. Stick to your birds, no necessity 

 for panic over price of food-stuffs. Poultry-keeping on Practical 

 and Paying Lines, by W. C. Archibald. 

 South African Poultry Bcview and Small Holder (Johannesburg). 



6/20 Our Need. The Ancona, by W. G. Looney. The Goat, or Poultry- 

 m.an's Cow, by Geo. R. Vivyan. Hens in their third laying 

 year; does it pay to keep them? by H. Curtiss. Roup, Con- 

 tagious Catarrh. 

 South African Sugar Journal (P.O. Box 925, Durban). 



6/20 Annual General Meeting of the Natal Planters' Union, 7th June, 

 1920. White Sugar Manufacture in Natal, by AVm. Clacher. 

 Notes on the Cotton Industry, by W. B. Wilson. 

 The Sun and Agricultural Journal of South Africa (P.O. Box 634, Johannesburg). 

 6/20 Transvaal to Tangier, scheme for railway to Paris and London 

 through the heart of Africa. Seed Selection of Tobacco, by 

 Pieter Koch. Electric Light and Power from small streams 

 (No. 2), by A. M. Daniels. Preparation and Packing of Produce 

 for Market, by G. Bidwell. The South African Grain Trade 

 Association. 

 Sunday Tiines (Farmers' Supplement), Johannesburg. 



6/6/20 Chemistry of Animal Nutrition, by J. S. Jamieson. Building an 

 Incubator House, by Malcolm MacFarlane. Rat Destruction. 

 Veterinary School. 

 13/6/20 Milking. Velvet Beans. Irrigation and Cultivation of Orchards. 

 20/6/20 Buying a Goat. The Soy Bean. 



27/6/20 Big FortTines in Trees and Timber. Problems in Beef Production, 

 by P. J. Naude. East Coast Fever, the necessity for hand- 

 dressing. Winter Control of Fruit and Garden Pests, by 

 " Entos." 



III.— AGRICULTURAL PUBLICATIONS IN OTHER PARTS. 



(1) The following interesting extracts are taken from a series of papers 

 entitled "The Biologist on the Farm," contributed by Prof. J. Arthur Thomson, 

 M.A., LL.D., in the Journal of the Scottish Board of Agricidture for January, 

 1920 : — 



Tivins and Twins. — We are not sure that many people are quite clear as 

 to the two kinds of twins. When a sheep or a cow, or any animal ordinarily 

 producing a single offspring gives rise simultaneously to two, these may be 

 fraternal twins or identical twins. In the first case the two offspring develop 

 from two distinct egg-cells ; they are often dissimilar, and they may be of 

 different sexes. In the second case the two offspring develop from one egg-cell; 

 they are duplicates of one another, and they ar^ always of the same sex. The 



