CURRANT MITE. 157 
treatment and experiments proposed on January 13th, to which is 
appended a rather fuller scheme of the experiments to be carried out so 
far as is possible on the bushes mentioned in the preceding list, and 
also on a fresh lot of bushes which have not as yet been treated :— 
‘“Course of treatment and experiments, 1898. Discussed and 
proposed January 13th, 1898 :— 
‘1st. To continue applications of the various insecticides (especially 
petroleum and soft-soap mixtures) throughout the season at frequent 
intervals; increasing the frequency of application when the buds are 
opening. 
‘‘9nd. To give heavy dressings of kainite, sodium nitrate, or other 
fertilizers. 
‘3rd. To cut down stems below the soil level, and cover with lime 
or kainite. 
‘‘dth. To raise seedlings from the least affected varieties. 
“5th. To graft upon Ribes awreum or other species of Ribes which 
have hitherto proved free from attack. 
“ Kxperiments with petrolewn.—Soft-soap added in the proportion 
of 1 1b. to each quart of petroleum. The various strengths used are 
as follows:—A=1:10 (of water), B=1:20, C=1:30, D=1: 40, 
EK=1:80. ‘Two sets of similar experiments to be made with Baldwin 
and Black Naples respectively. In each individual experiment (No. 1, 
2, &c.) the bushes are dressed once a month while the buds are 
dormant with one of the above solutions, and after the buds start the 
plots are subdivided, and parts of them dressed once a month with 
different strengths :— 
Experiments : 1 2 3 4 5 6 
Before growth, ae 
deecscd with | Sol. A B C D none none 
asoln. A asoln.B asoln.C asoln.D asoln. EK none 
b ” B b ” C b ” D b ” a0) b », hone 
ACen OT ONy ii) |(Cu sue Cancun, DiCl, aan Hience ss. none 
dressed with \d ,, D d,, E d ,, none 
Ce Hien... none 
f ,, none 
‘There will be about six plants in each of the final subdivisions. 
‘Experiments with calcium sulphide solution.—Repeated on two 
lots of Baldwins. Similar to the petroleum experiments, except that 
four different strengths only are used. Strengths used:—1: 20, 1: 80, 
1 50;-and 13100, 
‘“‘Hixperiments with carbolic acid on two lots of Baldwins, similar 
to those with calcium sulphide. Strengths used :—1 : 80, 1: 50, 
1: 100, and 1: 200. 
‘“‘Hxperiments with antinonnin on Black Naples; one series only, 
