Inseclfi Injurioufi lo the AjijiJc. 



173 



" 'J'lic wash useil a,t iirst was vory strong', owiiii;' to the scale eiicrust- 

 in;4 the trees so tliiekly this was thought necessary. Some se\'ent\' 

 ti'ees wei'C scrulil led with tlie rolhiwing : o lt)s. soft soap ( (.'Ijiswiel^), 

 1 gallon iiarattin (Tea hose), 10 gallons water. 



" Hair an hour al'ler the tree.s had heen scruhhed, the scales were 

 seen to l.ieconic dull grey. A few hours later the scales were 

 microscopically examined, and the eggs beneatli were found to lie 

 shrivelled and dead, and all lar\'a' that had hatched out were at ouce 

 killed. As some leaves close to the forks were seen to scorch at once, 

 and as the ova remaining were seen to be destro^'ed, the wash was at 

 once reduced to the following proportions : "i lbs. soft soap, 1 gallon 

 parafhu, 40 gallons of water. Tliis was used for some I'OO trees, and 



Fii;. IJ-.;.— si'ii.vyim; maiiiim-; (!■ 

 Sftul ill small i.l,iiitati"ns iiua ^av.Uiis Inr Mio 



j; O.VKS fATI 

 I Scak-, apliis 



raU'lliill,ar>. 



was found to have the desired elfect in not only killing the larva- and 

 young scale, hut the ova Ijeneath the scale. 



"The owner of the orchard, however, douljted about the second 

 formula lieing strong enougli, and scrulibed the remainder of the 

 trees with the strong solution. 



" A few trees were s]irayed all iiver with both the concentrated and 

 dilute emulsions, in neither case was any serious damage done to tiie 

 foliage ; although a lew delicate leaves were seen to be scorclied, in 

 •Tuly'they looked fjuite healthy and liore good fruit. Needless to say, 

 onh' a A'ery fine mist was sent ovei the trees. L'robably under other 

 circumstances damage would result, so tlie spraying treatment cannot 

 be advised during the summer. Strong paratfin emulsion causes 



