904 



Wind Power. 



[FEB., 



should be sulphured with the horse machine, and by this 

 means be kept well in check until the burr has developed 

 into hop; it is always a good plan to sulphur the hops when 

 they come into burr, and so prevent the mould beginning to 

 grow on the delicate "brush " of the "burr." 



In sulphuring with the horse machine it is not necessary 

 at each sulphuring to draw the machine down each alley, 

 because the sulphur is very light and will drift over two or 

 three alleys. The sulphurator can therefore miss one or two 

 alleys, and when the garden is next sulphurated the machines 

 should be drawn down the alleys previously missed. 



Still days should always be selected for sulphuring so 

 that a maximum of sulphur remains on the leaves. In windy 

 weather the sulphur is simply blown away. Further, it is 

 preferable to sulphur when there is a slight dew on the leaves, 

 because the sulphur then hangs to the leaves more readily. 



As a rule it should not be necessary to sulphur hops after 

 the hops are once formed, but in the event of red mould 

 spreading from the white mould sulphuring must be 

 continued until the hops are nearly ready to pick. 



WIND POWER. 

 W. R. Dunlop. 



The modern steel windmill is typical of modern success 

 in the concentration of natural power. It has become, both 

 to maker and user, one of the most satisfactory of engineering 

 achievements, for it works efficiently under the crudest and 

 most variable of conditions — such conditions that few other 

 machines have to contend with. 



The constantly changing wind velocity, the veering of the 

 wind, the full exposure to rain and snow, and the continual 

 variations of temperature are no easy factors with which to 

 effect a compromise; no other prime mover has so many 

 variables depending upon it as the windmill, and few 

 machines call for more sound investigation before a really 

 efficient machine can be placed upon the market. Moreover, 

 when one considers that the total cost of the machine is the 

 small annual charge for interest on capital, depreciation and 



