HAY MITES. 



27 



Grass, would be serviceable, and any wash or dressing which would 

 run on growth would be beneficial, independent of all other considera- 

 tions, as Aphides multiply most rapidly on sickly plants. 



All the ordinary applications that would be suitable are too well 

 known to need mention ; but where there may chance to be any mill 

 in the neighbourhood from which soft-soap wash has to be removed, 

 this would be an excellent preventive and restorative also. 



Whether any remedial measures could be serviceably used to such 

 an infestation as the above whilst the Grass was still growing, or on a 

 young growing corn crop before it had shot into stem, would much 

 depend on whether sprayers could be brought to bear. If a horse 

 spraying-machine could be used without damage by crushing or 

 trampling, there appears to be no reason why the various kinds of 

 soft-soap washes that are known to be serviceable for getting rid of 

 Aphides on other crops, as Hops, or on orchard trees, &c., should not 

 answer just as well here. The species are different, but they are so 

 similar in nature, that remedies which act on one kind would answer 

 also for another, and the common soft-soap wash, or soft-soap and 

 paraffin, or soft-soap and sulphur, or again, soft-soap and quassia, 

 might any of them be expected to do good, if, as above observed, the 

 method of application could be so managed as not to trample down or 

 bruise and waste the growing crop. 



Hay Mites. Tyrof/lyphns longior, Gervais. 



Tyeoglyphus longior. — T. longior, from figure by Fumoze and Eobin ; claw 

 with sucker of Tyroglyijhus ; right-hand side, from Murray's ' Aptera ' ; left-hand 

 side, figured by Ed. from life : all magnified. 



During the past few years the occurrence of Mites in hay, or rather 

 as appearing from haystacks, and from hay stored in lofts, in such 

 yast numbers as to lie in masses round the stacks, or beneath the loft 



