188 DESTEUCTIVE INSECTS OF VICTORIA: 



to the sides of the cart, and, secondly, by a short mast with tie -wires. 

 Other tie wires suitably disposed can be added when required, to prevent 

 horizontal swaying of the pipe. The two standards can, within certain 

 limits, be clamped to the sides of the cart in any desired position, so 

 that the long pipe can be placed at any distance between 3 inches and 

 10 feet above ground. In addition to, or instead of the nozzles attached 

 directly to the pipe, there can be attached a number of thin back- 

 wardly curving branch pipes, as shown at the right hand in Fig. 1. 

 These branch pipes deliver the spray on the under surface of the leaves 

 of ground crops such as potatoes, and right in the interior of cereal 

 crops, such as barley attacked by caterpillars, or wheat attacked by 

 rust. Fig. 2 shows the sprayer arranged for spraying hops, and Fig. 3 

 for spraying vines, five rows at a time. The pipes may bo similarly 

 arranged for spraying fruit trees in an orchard. 



The advantage of this machine is in the large area of ground that can 

 be covered in a short time. Thus, with a pipe 50 feet long, the sprayer, 

 moving at the rate of 2^ miles an hour, would cover more than 15 acres 

 an hour, or say 160 a day of 12 hours, allowing time for refilling. 



The tank is filled by disconnecting the pump from its chain gearing, 

 inserting the indiarubber hose into the well or cistern containing the 

 water or prepared solution, and working the pump by hand, backwards 

 way. On 'referring to the drawings, a pipe furnished with a cock 

 will be seen leading from top of the pump back again into the tank. 

 This pipe serves a double purpose : 1st, it acts as a stirrer, for any liquid 

 forced through it will stir up the liquid or emulsion in the tank ; 2nd, 

 it serves to adjust the amount of liquid to be delivered as spray, for it 

 will be readily understood that the more liquid is allowed to pass through 

 this pipe the less will pass through the nozzles. Further adjustment 

 can also be made by placing the spoke clamps on the cart further from 

 or nearer to the centre, so that the gearing chain works from a greater 

 or less circle and therefore greater or less speed. A strainer is fixed on 

 to the end of the feed pipe of the pump to prevent the entrance of 

 particles which would stop up the nozzles. 



The same system of piping can be adapted to the use of steam 

 spraying, a small steam boiler being then placed in the cart instead of 

 the tank, pump, and chain gearing. 



The chief advantage claimed for this sprayer is the rapidity and 

 wholesale manner of its operation. A machine which will cover 15 

 acres in one hour makes the cost of spraying little more than nominal. 

 Another advantage is that it does next to no damage to the crop. The 

 only damage done is by the cart wheels and the feet of the horse, which 

 in a track of 50 feet in width cannot amount to more than one or two 

 per cent. 



This sprayer is extremely simple in construction; an ordinary cart is 

 all that is required to carry it, and the pump can be used for other 

 purposes when detached from the tank. 



Agents : Messrs. John Danks and Son, Ltd., Melbourne. Price on 

 application. 



