Goat Moth Larvce attacl^iug IV it lows. 113 



The times to t'uini^iite for ]\Ieiily Ww^ are (a) before the vines 

 bloom ; (J) after the crop has heeu feathered. 



The house shouhl l)e well A'entilated for at least oue hour after 

 fumigation before anyone should go into it, the -windows being 

 arranged so as to open from the outside, and also the door. 



The cost comes to about 4r/. per 1,000 cul)ic feet. Tins treatment 

 has been found not to damage CAen maiden-haix ferns if carried out 

 properly, and there is no danger if proper precautions are taken. It 

 is not advisaltle to leave the treatment to ignorant people, as the 

 fumes and tlie cyanide are of course deadly poisons. 



SUB-GROUl' B. ANIMALS WHICH CAUSE INJUEY OE 

 DISEASE TO MAN'S VEGETABLE PLANTATIONS. 



Section III. 

 Animals Injurious to Forestry. 



Goat Moth Larvae attacking Willows. 



Mr. "W. S. Mockett, of Eamsgate, wrote in Septeml)er regarding 

 the damage to willows l)y the lar\'je of the Coat ]\I(jth. Several other 

 ^correspondents have also applied for information both in regard to 

 their life-history and ways of destroying the larvae. Ash, oak, elm, 

 as well as fruit trees, are attacked by these large larvie, and they 

 frequently kill the trees outright. 



If there are not many Coat Moth larvas in a tree it is quite 

 possible to destroy tliem. This may l)e done in several ways ; the 

 old plan was to insert a wire into the oi)ening of the txmnel to tind 

 out which way the tunnel goes, and if downwards use a fluid, if 

 upwards a gas. 



The best fluid is paraffin emulsion, with a little Paris-green 

 injected l)y means of a S3ainge, the nozzle being forced into the liole 

 and surrounded by clay until the injection is over. If a gas or fume 

 is used, sulphur acts well ; use bee-bellows and blow the fumes in, 

 fixing the nozzle as before with clay. 



About June, smear the trunk of the tree with cow-dung and clay, 

 mixed with paraffin, as far up as holes are found ; this pre^•ents egg- 

 laying. By far the best x^lau has recently been found in the use of 

 cyanide of potassium. Place a small piece of stick cyanide in each 

 hole and then close up with clay. The fumes soon kill tlie larva^. 

 within theu" tunnels. 



I 



