Reports to tJic Board of A gr it id tit re. 165 



(4) The yoiing osiers may l»e sprayed with Paris ^reen to kill 

 Iteetles or larva; early in the year. 



(r>) In small beds the beetles can be collected early in the y(;ar 

 by shaking them off tlie shoots, on to tarred sacks or boards. 



((')) It is said benefit is deri\'ed from dragging a rope weighted 

 in the middle across osier beds and thus knocking the beetles off. 

 It is donbtfnl if any permanent good could be the result of this 

 method. 



(7) The stocks may l)e tlressed with finely-] )owdered lime and 

 soot in the spring. 



The chief things to do are the destruction of winter (juarlers, 

 spraying with Paris green, and jarring the beetles; off into |»ails or 

 on to tarred sacks. 



The following coinuiuHicalion was recei\ed from the Board's 

 correspondent : — 



" We are much obliged for your favour of the 23rd inst., enclosing 

 copy of memorandum supplied by the Natural History Museum 

 regarding the Ijeetles we sent to your Department. We can confirm 

 ]»ractically everything contained in that memorandum regarding the 

 life-history of these pests, and the suggested remedies are in accordance 

 with the lines upon which we have been w^orking. We find the 

 most expeditious manner is to put boys on to brush each head or 

 willow plant separately. The beetles fall off into a tray covered 

 with an adhesive substance not quite so thick as tar and are then 

 drowned in paraffin and water. We destroj-ed some millions last 

 winter in their winter quarters, and as they have confined themselves 

 lo two varieties of willows we are hopeful that we have practically 

 exterminated them. They attacked us very severely nine or ten 

 years ago, but after a couple of seasons disappeared entirely. 



The Pine Sawflies. 



{Lnpliiirvx i^ini, Linn., and L. i'i'fi's, Linn.). 



Some of the following notes have been sent to the lioard on the 

 Pine Sawfly, and will appear in leaflet form. Other notes have since 

 been added. 



Pine trees of all kinds are frequently seriously damaged by the 

 larvae or grubs of Sawflies throughout Great Britain. The chief 

 culprit is the Pine Sawfly (Zoy/////;';/.s^>(';r('), but several other species 

 do considerable harm no\\' and ngain (//. riifvs and Ncmafva ohietia). 



