174 DESTRUCTIVE INSECTS OF VICTORIA: 



contained in the spray vat, by the movement of this agitator the whole 

 of the contents of the &pray vat is maintained in a thorough state of 

 agitation. This agitator has three blades semi-rothting on a stud arm 

 on the suction pipe. There are thus formed in the vat a back-wash 

 and a by-wash, which effectually cause all the ingredients to be assimi- 

 lated. Williams' Patent Kerosene Attachment is fitted to nearly all 

 Doncaster Spray Pumps now made, as this improvement is now recog- 

 nised as the best improvement yet made in connexion with spray pumps ; 

 it is simplicity in itself. The attachment consists of a brass tube, one 

 end of which is screwed into a check and wheel valve at the side of the 

 pump ; the wheel valve is to regulate the supply of kerosene. The 

 other end of the tube is bent round and inserted into a vessel containing 

 kerosene, which is fixed on the side of the vat. By this means 

 kerosene and water are pumped up at the same time, and by the action 

 of the plungers become thoroughly amalgamated under pressure. The 

 attachment can be detached from the pumps when not required, or may 

 be used in connexion with other mixtures. We may mention that all 

 valves, &c., are on the outside of the vats, and can be examined readily. 

 The kerosene can be regulated to any desired strength. Bucket spray 

 pumps can be fitted with the patent kerosene attachment also. 



Price : £10 ; kerosene attachment 30s. extra. 



John Davies and Co., 235 .Franklin-street, Melbourne. 



Pump for Pakks and Gardens. 

 {See Fig. 2.) 



Small Handy Pump, with Kerosene Attachment, throwing a 

 Triple Spray, fitted with Piston Plunger and Gun-metal 

 Valves. 



{See Fig. 3.) 



Small Handy Pump, without Kerosene Attachment, fitted 

 with Lever Handle. 



{See Fig. 4.) 



Davies' Patent Agitator. 



{See Fig. 5.) 



The object of our new agitator is to provide a device which will 

 effectually agitate the liquid contained in the spray vat. By the move- 

 ment of our agitator the whole of the contents of the spray vat is 



