8 



Where one-storey buildings are installed with artificial heating 

 apparatus, a timbered floor is often necessary. This may be provided 

 with spaces for the passage of air, and be raised above the level of 

 the ground to enable steam or hot-air pipes to be laid and to create a 

 hot-air chamber in this region. 



Light and Windows in Factories. 



The bad effect of light on rubber, and the necessity of having 

 abundance of light in the machinery sections, necessitate the adoption 

 of a different arrangement in various parts of the factory. There can 

 hardly be too many windows near the engines and washing mills. 

 These should therefore be provided and constructed so as to open 

 inwards for draught purposes. 



In the curing room, however, windows must either be supplied 

 with red glass, or curtains, to stop the chemical rays from reaching 

 the rubber, or with wooden or corrugated iron doors — which can be 

 opened from the inside to allow light to enter during inspection of the 

 rubber. It is necessary that the rubber in the curing room be fre- 

 quently inspected in oi-der that the development of moulds and 

 tackiness may be arrested in the initial stages; hence the desirability 

 of having even the curing room well supplied with light under control. 



Doors and windows should, whenever possible, be made to close 

 on the inside in order that draughts of fresh air can enter the building 

 without check. — [India Ruhher Journal.) 



POTATOES AND JERUSALEM ARTICHOKES 

 FOR PIGS. 



" In his valuable work on "Pigs and their Management," Mr. H.W. 

 Potts, Principal of the Hawkesbury College and Experiment Farm, 

 Richmond, New South Wales, gives a chapter on " Crops for Pigs." 

 Amongst the roots and tubers he considers Jerusalem artichokes as 

 a most valuable food. Why this crop has been so much neglected 

 by Queensland pigbreeders is hard to understand, seeing that its 

 cultivation is simple and the yield of tubers considerable. 



Concerning roots and tubers generally as pig-food, Mr. Potts 

 says that : — "All these, when fed continuously and exclusively to 

 pigs, have a lowering tendency on the digestive functions, but that this 

 is a matter which, in intelligent hands, can be controlled. The value 

 and importance, he says, of root crops for pigs, particularly in our 

 warm climate, are now widely recognised, in so far as they are used 

 only as a succulent and rtlishable adjunct to other classes of food, 

 richer in protein, and containing less moisture. A normal 

 nutritive ratio must be maintained, and the success of feeding 

 largely depends on the ri^ht interpretation of the balanced ration. 

 We find that many root crops form excellent aids to the standard 

 feeds. 



