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Insects Injurious to Celery.—Mr. G. ©. Davis, consulting zoologist to 
the Michigan Agricultural Experiment Station, has just published as 
Bulletin 102 of that Station, an interesting report on insects injurious 
to celery in Michigan. A number of species not heretofore recorded as 
celery enemies receive treatment, among them several species of true 
locusts, several leaf-hoppers, the Tarnished Plant-bug (Lygus pratensis), 
the Flea-like Negro-bug (Corimelena pulicaria), the Three-lined Thrip 
(Coleothrips trifasciata), the Celery Plant-louse (Rhopalosiphum dianthi), 
several Flea-beetles, the larva of Papilio asterias, the Spotted Cut-worm 
(Agrotis C-nigrum), the Celery Borer (Pilyctenia ferrugalis), and four 
Tortricids, viz, Dichelia sulfureana, Sericoris bipartitana, Cacecia rosa- 
ceana, and Tortrix pallorana. Life histories of the insects where known 
are given, and the principal remedies consist in the use of ‘ hopperdozers” 
and “ hopperettes,” two convenient styles of which are illustrated, the 
use of carbolic acid in the proportion of a tablespoonful to two gallons of 
water as a deterrent, kerosene emulsion, pyrethrum powder, poison 
trap system for the cut worm, cold water for the common Celery Plusia, 
and the cleaning up of leaves and refuse material for the leaf-rollers. 
The use of Paris green against the leaf-feeders is not recommended 
since the poison after spraying settles around the edible portion at the 
base. After two sprayings with Paris green at the rate of 1 pound to 
175 gallons of water certain plants were washed without separating 
the stalks and prepared as for market. They were then analyzed by 
Dr. R. C. Kedzie, who found that each pound of celery contained 0.0368 
grains of arsenic. Celery sprayed once only contained 0.0244 grains of 
arsenic to the pound. This is far below a poisonous dose, but on account 
ot the cumulative effects of arsenic Mr. Davis recommends that it be 
not used. The bulletin contains a number of original illustrations, 
most of which are poorly done. The text, however, will be of much use 
to celery growers. 
The Spraying of Orchards.—Bulletin No. 60 of the Cornell University 
Agricultural Experiment Station summarizes the experience of the 
Horticultural Division at the Station in regard to the spraying of 
orchards. The bulletin is prepared by Mr. E. G. Lodeman, who treats 
his subject under the three heads: (1) The Profits of spraying Apple 
Orchards; (2) Tests of some Fungicides and Insecticides Upon Peach 
Foliage; (3) Some novel Insecticides and Fungicides. The profits of 
spraying are once more conclusively shown. The testimony of a num- 
ber of practical orchardists is given in addition to the very pronounced 
beneficial results of the Station work. Peach foliage is once more 
shown to be extremely susceptible to the action of the arsenites. The 
novel substances tried were Iron chloride, Zine chloride, Lead acetate, 
Fostite, Boron compounds, Iodine, Nitrate of soda, Caustic potash, 
