214 Journal op the Department op Agriculture. 



Insoluble phosphoric oxide costs about 4s. 3d. per unit. With these 

 unit values the following two bone meals may be compared : — 

 No. 1 Bone Meal : — 

 Analysis — 



Nifr) pn Phosphoric Oxide Soluble in Phosphoric Oxide 



^ ■ 2 per cent. Citric Acid. Total. 



5"3 percent. I(v5 percent. 18 per cent, quoted at 



£12. 10s. per ton. 

 Calculation — 



Nitrogen 5*3 x 20s £5 6 



Phosphoric Oxide soluble in 2 per cent. Citric Acid 



16-5 X 8s. 6d 7 3 



Phosphoric Oxide insoluble (18:l(i:.5) l-,5 x 4s. 3d. 6 5 



£12 12 8 



This sample is therefore quoted actually at 2s. 8d. under its market 

 value. 

 No 2 Bone Meal : — 



Nitro n Phosphoric Oxide Soluble in Phosphoric Oxide 



° ■ 2 per cent. Citric Acid. Total. 



4 per cent. 20 per cent. 22 per cent, quoted at 



£14. 10s. per ton. 

 Calculati(»i — 



4 per cent. Nitrogen at 20s. ... ... ... ... £4 



20 per cent. Phosphoric Oxide soluble in 2 per cent. 



Citric Acid, at 8s. 6d 8 10 



22-20 = 2 per cent. Phosphoric Oxide insoluble, 



at 4s. 3d 8 (> 



£12 18 G 



This fertilizer is therefore quoted at £1. lis. 6d. above its actual 

 value, so that No. 1 is much the cheapei>. 



In conclusion we would remind farmers of the necessity of 

 having their fertilizers analysed especially iu the case of basic slag 

 which is at present very scarce, of variable composition, and very 

 liable to be adulterated. 



GROOTFONTEIN, MIDDELBURG (CAPE). 



The Special Dairy Course. — The course commenced on 1st March 

 and finished on 14th December; the two previous courses being each 

 of six months only. Many applications were received for this course, 

 but owing to lack of facilities and accommodation, only twelve could 

 be accepted. The course was especially arranged for men who desired 

 to become factory managers, and included lectures and practical work 

 ir dairying, dairy chemistry, dairy bacteriology, engineering, book- 

 keeping, and animal husbandry. Upon completion of the course at 

 the school, the candidates are required to perform at least six months' 

 work in factory dairying and management at an approved butter or 

 cheese factory. At the conclusion, if their work has been of a satis- 

 factory nature, they undergo an examination in these subjects, this 

 examination being conducted by the Dairy Division, 



