REPORT OF THE ENTOMOLOGICAL DEPART- 

 MENT. 



President 0. Clute, Director Experiment Station : 



Dear Sir — I submit the following report of the work done in the 

 Entomological and Apiarian Departments of the Experiment Station for 

 the year ending June 30, 1889: 



At the beginning of the season I submitted the following scheme of work 

 for the year, which was accepted by the "advisory board " of the station: 



" In the Entomological Department, experiments with the arsenites in 

 hopes to find what substance is least injurious to foliage, and what may be 

 the influence of date of application and atmospheric conditions on the 

 amount of injury wrought; to continue the experiments with the arsenites 

 and carbolized plaster as remedies for the plum curculio; to carefully inves- 

 tigate the matter of pasturing or feeding grass growing under trees at the 

 time they are sprayed with the arsenites, London purple or Paris green, that 

 we may know positively the danger incurred in such practices ; to investigate 

 the ravages of the several flea beetles ; Haltica Ohalybea 111., Crepidodera 

 Cucumeris Harr., and Phyllotreta vittata Fab., and if possible find a satis- 

 factory remedy for each and all; to investigate the matter of growing 

 potatoes, to determine what relation there may be between insect attack and 

 scab ; and to give attention to such other insects as may from their numbers 

 or ravages give cause for anxiety or alarm. 



" In the apiarian division of our work it was proposed to experiment with 

 the following honey plants: Eocky Mountain bee plant (Cleome integrifolia) 

 Chapman honey plant (Echinops sphcerocephalus), and a species of Melissa ; 

 to determine the wisdom or unwisdom of special planting of all or any of 

 these plants solely for bees; to again sow the Japanese buckwheat, to 

 further study its prolificness, its value as a honey plant, and its power 

 to resist drought, and to mature a good quality of seed even though sown 

 early or late ; to continue our careful cross-breeding of bees ; to arrange for 

 analyses of various kinds of honey ; and to investigate and observe such 

 matters of practical manipulation and management as may be suggested 

 during the season." 



EXPERIMENTS WITH THE ARSENITES. 



Quite elaborate experiments were performed with London purple, Paris 

 green and common white arsenic. The details of these experiments, together 

 with the results, were embodied in a paper read before the " Society for the 



