that this was the case with this insect, I should not be at all sur- 

 prised if other species of Cramhus should be found to possess the 

 same habits, for I have found C. girardellus and C. agitatellus 

 flying in considerable numbers about large and clean bogs. 



A cut-worm was found to be very common on some of the bogs 

 in North Carver, South Carver and Plymouth, hiding in the sand 

 and dead leaves, near the stems of young plants, during the day, 

 and eating the bark of the stems near the ground, often completely 

 girdling them. These were bred in the insectary, and proved to 

 be Carneades deter sa Walk. 



The larvae of Acronycta tritona Hbn. were found in abundance 

 on one bog, where they devoured the leaves, stripping the vines. 



The army-worm (Leucania unipuncta) was very destructive on 

 the bogs in several towns on the Cape during the past year, cutting 

 off the new growth. Dichelia sulfureana was very abundant on 

 one bog at Pleasant Lake ; and the larvae of the June beetle were 

 said to have injured the roots of the plants on many bogs. 

 Mamestra picta Har. was found on several bogs, feeding on cran- 

 berry leaves with evident relish. Sphinx goi'dius, Hyperchirio io, 

 Lagoa a'ispata, Agrotis ypsilon and Acronycta oblinita were also 

 found feeding on cranberry leaves. Several other larvae were also 

 found feeding on the cranberry, but have not yet been determined. 

 A more complete account of these insects will be given in a future 

 bulletin. 



The Agricultural Division. 



Soil tests upon the co-operative plan agreed upon in convention 

 in Washington in 1889 have been continued. During the past 

 season we have carried out six such experiments, — two upon our 

 own grounds, one with corn and one with grass ; and one each in 

 Worcester, Concord, Hadley and Shelburne, with mixed grasses 

 and clover. The general results are exactly in line with those of 

 previous years. The main points indicated are shown below : — 



Grass and Clover. — First, nitrate of soda, applied early in 

 spring at the rate of one hundred and sixty pounds per acre, has 

 given a large and profitable increase in the first crop, affecting 

 chiefly the grass in the mixed sward. 



Second. — Their application produces little or no increase in the 

 rowen crop ; and the indication is, therefore, that to produce a 

 good crop of this, a second application of nitrate of soda should 

 be made after cutting the first crop. This we have not tried. 



Third. — The potash influences chiefly the growth of the clover 

 in the mixed sward. On those plats where muriate of potash at 

 the rate of one hundred and sixty pounds per acre has been ap- 

 plied there has always been a large proportion of clover. 



