White woolly cureant scale. 
48 
knocked off in the operation were raked up and burnt, all would help 
at least to lessen amount of infestation. 
It would not be possible to make use of poisonous applications in 
the season of leafage and fruit, but there does not seem to be any 
reason why, in winter, applications of soft soap or Paris-green should 
not be syringed or sprayed on the bushes by means of some of the 
various kinds of apparatus now coming into notice.* These “emulsions ” 
would lodge in hollows, and especially above each bud, so as in all 
probability to prevent these lurking-places being infested. 
The above notes, however, are only given as suggestions of treat¬ 
ment which might be of service, and as this attack causes serious loss 
where Black Currants are grown on a large scale, any information as 
to means which may have proved useful in checking the Mite would be 
of much assistance to busli-fruit growers. Notes of the history of the 
attack, and measures for extirpating it, when on only a small scale, 
have been given in previous Reports. 
White Woolly Currant Scale. Pulvinaria ribcsice, Signoret. 
PULVINARIA RIBESIAS. 
1, Female and woolly egg-sac, mag. (nat. size given at p. 45). 1a, female scale, mag., 
with line giving nat. length. 2, larva, magnified. 
The accompanying sketch (see p. 45) is taken from a photograph 
of a Currant-bougli infested by the White Woolly Currant Scale, the 
Pulvinaria ribesia, Signoret, a kind of attack which is known in France, 
but which, although we now find that it has been present at various 
places in England and Scotland during the last few years, has not been 
scientifically identified and recorded as present in Britain until June, 
1889. 
On June 18th, specimens of the attack were sent me from the 
garden of Mr. George Parkin (by whom they were first observed at 
Wakefield), by Mr. S. L. Mosley, Beaumont Park Museum, Huddersfield, 
with a note that it evidently “ seemed at home where it was established, 
and that the Red Currant-bushes were terribly affected by it”; and 
^ * See “ Emulsions,” “ Paris Green,” and “ Cyclone nozzle ” in Index. 
