er. 
shown in figure 1. Not only is young growth checked, but in bad 
cases the year's fruit shanks off entirely. 
Damage to apples. 
The damage on apples (fig. 4) is very similar to that caused by 
the yellow Springtail to currant foliage. The young tender leaves 
are gnawed in small areas, either the upper or lower epidermis 
being left intact, and later splitting. This attack has only been 
reported to me once from Kent during the last year (fig. 5). 
Most of this damage is caused by Hemiptera. 
The yellow Sminthurus on potatoes. 
For some years a similar disease has been sent me attacking 
potatoes. This also could not be explained, as there were no signs 
of insect or fungus on the foliage or haulm. 
Owing to the creatures appearing in abundance in my garden, I 
was able to trace this common form of damage to the same 
Sminthurus as attacks the currant (fig. 5 and 6). Normal potato 
foliage from the same bed is shown in the photograph. 
That other causes (1) may produce similar results there is no 
doubt, but that the yellow Springtail (fig. 7) is the chief cause of 
this disease in currants and potatoes there is also no doubt. I have 
seen a similar attack in gooseberries, but on the bush being 
examined, a casual examination revealed no Springtails. 
Damage to ¡turnip leaves by Sminthurus luteus and S. niger 
LUBBOCK, etc. 
Miss ORMEROD (2) records Sminthuri as damaging the turnip 
crop in Aberdeenshire in 1894. She said that in July a correspon- 
dent wrote as follows : « My turnips, and others in the neigh- 
bourhood (Lumphanan, Aberdeenshire) are being a good deal 
damaged not only by turnip flea, but by something else, which 
(1) I have traced very similar damage to a green Lygus. 
(2) Rept. and Obs. Inj. Ins. for 1894, p. 110, 1905. 
