COPPER SULPHATE (BLUE VITRIOL). 



221 



In spite of the perfection of the processes in use, even if there be 

 no doubt of the superiority of this treatment over others, with the 

 same end in view, loss of grain is inevitable, and it is necessary to in- 

 crease from 20-30 per cent the amount of seed sown to prevent too 

 thin sowing, although in practice there is only one treatment for all 

 the cereals. 



Barleij. — Hordeum vulgar e is infested by Vstilago hordei, Bref, 

 and Hordeum distichum by Vstilago Jensenii, Rost. 



TABLE XXX. —Showing Effect on Germination of Seed Barleij of Steeping in 

 Solutions of Bhie Vitriol of Various Strengths. 



TABLE XXXI. — Shoiving Delay in Germination by Kulin's Treatment. 



T.\BLE XXXII.— .S7Mj(fi«r7 Effect of Blue Vitriol Pickle on Crop of Barleij. 



These experiments were made by Hollrung in using Kuhn's method 

 of disinfection, 05 per cent blue vitriol and 6 per cent of milk of 

 lime. 



Oats. — AvencB saliva is infested with Ustilago Avence, Eost. ; 

 Ave7ia elatior is infested with Ustilago pereimans, Rost. 



