282 
Canadian Agriculture. 
was resorted to, the cost was 2/. Qs. per acre. Ploughing neces- 
sarily ceases with the beginning of winter, but the pulverising 
effect of the long frosts in the promotion of a desirable tilth 
and the formation of a good seed-bed, is a factor of considerable 
importance in prairie farming. The wheat is sown at the rate of 
1^ bushels per acre by means of broad-cast sowing-machines, 
each drawn by one horse. The sowing takes place about the 
end of March on the rough fallow, the sowing-machines being 
followed by spring harrows, each drawn by two horses. The 
