6 BULLETIN 263, U. S. DEPARTMENT OF AGRICULTURE. 
dead ones. Another bog, in which the insects were found to have 
reached the pupal stage, was reflowed May 28 and 29 for a period of 274 
hours. Soon after the water was drawn from this bog a second inves- 
tigation was made which revealed no dead pupse and 49 live pupae. 
Reflowing the bog when the beetles have emerged from the ground 
and before egg laying has commenced would undoubtedly carry some 
of the beetles ashore where they could be lolled with kerosene, but 
this operation would have to come at a time when the young berries 
are forming, and the use of water at that time is apt to be disastrous 
to the setting of the crop. 
Carbon bisulphid was given a trial to determine its effect on larva? 
and pupse in the soil. Used in holes at varying strengths of the 
liquid and varying depths and distances apart, negative results were 
obtained in each plat. In plat 1 the holes were made a foot apart 
and 4 inches deep and into each was poured one-half fluid ounce of 
carbon bisulphid. The liquid nearly filled each hole and all holes 
were covered with soil and tamped with the foot. Larvse found 
within 2 inches of some of the holes were unaffected by the gas. 
The failure of this substance to kill is thought to have been due to 
the wetness of the bog which prevented the fumes from penetrating 
the soil. No injury resulted to the vines except where drops of the 
liquid were spilled on them from above. 
Observations of two seasons' spraying on a bog near New Egypt, 
N. J., have shown that an arsenical, added to the customary 
Bordeaux and resin-fishoil soap used to control the fungous diseases 
of the cranberry, is of value in killing the beetles which feed on the 
foliage. Arsenite of lime at the rate of 1 pound of white arsenic per 
200 gallons of Bordeaux mixture per acre was the poison applied 
by the owner of the bog the first year. Two applications were made, 
the first beginning July 1 and the second July 14. In 1914 the bog was 
sprayed more frequently owing to the presence of an infestation of 
fireworms (RJiopobota vacciniana Pack.). The dates of spraying were 
June 11, June 18, June 30, July 9, and July 20. Arsenite of lime was 
used in each instance, bu t beginning with the third application a differ- 
ent method of preparing it was employed, as follows — 1 pound of 
caustic soda was dissolved in 2 quarts of water and while this was dis- 
solving, 2 pounds of white arsenic were added. It is essential in pre- 
paring arsenite of soda after this formula that a very good grade of 
caustic soda be secured, otherwise some of the arsenic may remain 
uncombined and produce injury to the foliage or fruit. In five min- 
utes the arsenic was completely dissolved, leaving a clear solution if 
the crystalline variety of arsenic was used, or a silt-colored solution if 
the amorphous arsenic was employed. The presence of a small 
amount of lead in the amorphous arsenic seemed to account for the 
cloudiness of the solution. Mr. F. S. Chambers, of J. J. White (Inc.), 
