220 Agricultural Gazette of N.S.W, [Mar. 2, 1920, 



The result was highly successful. The first night seven baits were laid in 

 this way, at a distance of some three hundi'ed yards from the fences, bii'ds 

 killed on the previous nights being used as baits. The next morning nine 

 foxes, as shown in Fig. 1 of the illustrations, were found dead in close 

 proximity to the poisoned baits. 



Fig. 2 shows the method by which the poison was inserted into the bait. 

 The poison used was white soluble strychnine. This was inserted in an 

 incision made in the neck of the birds just below the crop, and in the manner 

 shown in the illustration. Two pointed sticks were used to place the poison 

 in the incision. 



Fig. 3 shows the operator throwing the bait away from the end of the 

 pointed stick already mentioned. 



In addition to the nine foxes shown in Fig. 1, three others were poisoned 

 on the following night in exactly the same way, making, in all, a dozen in 

 two nights. Apparently the whole pack that was visiting the yards was thus 

 wiped out. 



Annual Stud Pig Sale at Hawkesbury 

 Agkicultural College. 



The Annual Stud Pig Sale at Hawkesbury Agricultural College will be held 

 on Wednesday, 24th March, at 12*30 p.m., when fifty specially selected 

 pedigreed pigs (including Berkshires, Tamworths, Middle Yorkshires and 

 Poland Chinas) will be offered at auction. 



A train is timed to leave Central Station, Sydney, for Richmond at 

 8 55 a.m., and vehicles will meet the train and convey buyers to the sale. 

 Luncheon will be provided at the College, and buyers can i-eturn to the city 

 by 6 p.m. on the same day. 



Arrangements can be made for crating and despatching the animals, and 

 the vendors will feed and attend to same pending despatch. 



Catalogues and further particulars can be obtained from Messrs. Badgery 

 Bros, (auctioneers), the Principal of the College, or the Under Secretary and 

 Director, Department of Agriculture, Sydney. 



The Maintenance of Fertility. 



A CROP of 30 bushels of wheat removes from the acre on which it is grown 

 33 lb. of nitrogen, 14 lb. of phosphoric acid, and 9J lb. of potash ; whilst 

 a crop of 22 tons of mangolds removes 87 lb. of nitrogen, 34 lb. of phosphoric 

 acid, and 223 lb. of potash. If, then, mangolds were sold, what a huge loss 

 in fertility the farm in general would sustain. 



Potatoes, again, are a crop that are invariably sold ofi the farm. Now, 

 6 tons of potatoes, an average yield of an acre, remove 47 lb. of nitrogen, 

 21^ lb. of phosphoric acid, and 76| lb. of potash. 



These examples show plainly enough that a crop is exhaustive or not, 

 according as it is or is not sold off the farm. — W. R. Liston, in the Agricultural 

 Gazette (England). 



