136 DESTRUCTIVE INSECTS OF VICTORIA : 



is exceedingly simple, there being nothing of an intricate character con- 

 nected with it. Any description of oil can be used, but the thicker the 

 better. It is claimed for this invention (which has been duly protected 

 by the inventor) that it will preserve all orchards, where it is in use, 

 from the attacks of those numerous tribes of insects that have been so 

 destructive to all fruit-bearing trees, and, in many cases, so ruinous to 

 their proprietors. The inventor has tested the lamp with excellent 

 results. 



The price of the lamp is ten shillings each. 



John Greenhill, 41 Collins-street, Melbourne. 



" PATENT AGITATOR SPRAY PUMP." 

 (See Fig. 20.) 



The above pump is manufactured by Messrs. Wilkins and Field, of 

 Wellington and Nelson, New Zealand. The principal points in the 

 pump are : 1. The pump being simple in construction is not liable to 

 get out of order. 2. By means of a cylinder at the top of the pump it 

 throws a continual flow of water. 3. It is easily worked, and for 

 spraying trees two or three pulls at the piston-rod will fill the chamber 

 and keep the spray going half a minute. 4. If it should clog up with 

 any thick material the operator can open up the valves by means of 

 screws at A and B and take out the marbles. 5. This alone is a great 

 saving of time and money, as many other pumps require to be unsoldered 

 and taken to pieces. 6. The agitator, B, is one of the strong points of 

 the pump ; it keeps Paris green, hellebore, benzole, and any other 

 mixture in the bucket in a continuous boil, and allows no sediment to 

 settle in the bottom of the bucket. 7. Each pump is fitted with a 

 straight jet, which is an ordinary Bray's gas burner, and is just as 

 effective as, and is used in the Nelson (N.Z.) district in preference to, 

 the cyclone sprays. 



The pumps are made in Nelson, New Zealand, in three qualities, 

 and are numbered 1, 2, and 3. No. 1 are made of zinc, japanned ; No. 



2 are all brass, with the exception of the piston-rod, which is zinc ; No. 



3 are all brass. A piece of f brass tubing with a gas jet at the top is 

 usually sold with the pump. This screws on in place of rose, &c., 

 and is used to reach into and around tall trees. 



Price : 3 and upwards. 



Agents at Melbourne: McLean Bros, and Rigg. 



APPENDIX II. 



THE GAS TREATMENT OF SCALE INSECTS. 



The following matter having reference to the gas treatment of scale 

 insects, with explanations of Figs. 17, 18, and 19, has been extracted 

 from the "Report of the Entomologist, Charles V.Riley, M.A., Ph. D., 



