19 



tious of matingland laying eggs. These moths are called " dusk-flies" 

 because tliey fly only in late afternoon and early evening. Each fe- 

 male deposits 300 to 500 e:z:gs, taking probably a W3ek or ten days in 

 which to do it. 



Remedy. 

 Reprint from the Agricultural News Vol. II., p. 362. 



In a previous number of the Agricultural News (Vol. II., p. 330), 

 the use of Paris green as a dry mixture with finely sifted dry, air- 

 slaked lime has been recommended. The dry mixture has been the 

 more strongly advocated because it requires no expensive apparatus for 

 its application and because there are so few spraying outfits in these 

 islands. While the cotton worm occurred only sparingly, as was the 

 case at the beginning of the season, I lb of Paris green in o ) to lOOlbs 

 of dry lime seemed to be sufficient, bat now that every field attacked 

 soon comes to have enormous numbers of caterpillars, this mixture is 

 found to be too dilute. 



Recent trials of a mixture at the rate of 1 to 10 seem to give good 

 results; while the Hon'ble F. Watts aud Mr. W. N. Smds write that 

 in Antio-ua the mixture is most successfully used a,' the rate o" I to 6. 



The amount necessary per acre varies, of course, according to the 

 size of the plants, but in Antigua I lb of Paris green has been found 

 to serve for one application for ^ to 1 acre. An experiment, conducted 

 at the Botanic Station, Barbados, has indicated that mixed in the pro- 

 portion of I to 10, a p.^und of Paris green will be sufficient to dust ^ 

 to ^ acre. 



Used as a spray, Paris green has been recommended in a mixture 

 at the rate of 1 lb to 150 gallons of water with two or three times its 

 own weight of lime. This mixture may be made stronger —1 lb to 

 100 gallons of water— if a proportionate increase in the amount oE 

 lime be made. In preparing a Paris green mixture for spraving, the 

 poison should first be mixed with a small quantity of water an 1 then 

 added the full amount, otherwise there is a possibility of its not get- 

 ting thoroughly mixed. 



AGRICULTURAL COLLEGE AT GUELPH. 



The Agricultural College at Guelph, Canada, has a two years' course 

 intended specially as a preparation for work and life on t'le farm. 

 This course is the most important feature of the College as its design is 

 to lay a scientific foundation on which the young farmers of the country 

 may build up their practice, when working their own farms. The scien- 

 tific basis is partly theoretical and partly practical. The practical side is 

 considered all important ; the scientific teaching throws light on the 

 other, gives a rational explanation of operations, and teaches the 

 youths to observe and to reason from their observations. Manual 

 training in ordinary farm operations, such as harnessing and driving 

 horses, ploughing, harrowing, &c., must be learnt before admission to 

 the College and a certificate must be produced that at least one year 

 has been spent at work on a farm. Having ensured that a youth is 



