[ "3 ] 



the bullock-shaft is attached by means of a large cog-wheel 

 which turns a smaller pinion-wheel) to the machinery con- 

 cerned. There are many forms of gearing for obtaining 

 increased speed, even for working such high-speed machines 

 as centrifugal cream separators. The best and most efficient 

 is Messrs. Lister's Triplex Horse-gear (Fig. 5) which requires 

 no intermediate gearing. The lay-shaft makes 64 revolutions 

 to one of the horse, so that by attaching a 24-inch cog-wheel 

 at the end of the shaft working in gear with a small pinion 

 it is possible to drive a cream-separator without ithe inter- 

 vention of a leather belt or rope. 



FIG. 5. MESSRS. LISTER'S TRIPLEX HORSE-GEAR. 



147. Wind-power. Though wind-mills are going out of 

 fashion in highly civilized countries, they seem to be specially 

 appropriate for India. The improved vind-mills or aeromotors, 

 the introduction of which is being attempted by the various 

 Agricultural Departments of India, cost so much at the first 

 setting up, that they do not seem to be adapted for the use 

 of the ordinary raiyat, The old-fashioned English wind- 

 mills which have been introduced into British colonies of 

 o 



