THE BLACKHEAD EIEEWOEM OE CEANBEBEY. 33 
number of gallons used for a thorough application. Approximately 
12 trips were necessary across an acre with this outfit. In point of 
time and material the spray gun was the most economical, requiring 
only 35 or 40 minutes to spray an acre, with an average of 375 gallons 
for an application. It was necessary to make only 6 to 8 trips with one 
spray gun across an acre. 
Effect of the Nicotine- Sulphate-and- Soap Solution on the Cranberry Plant. 
Although 40 per cent nicotine sulphate in the proportion of 1 part 
to 800 parts of water with fish-oil soap at the rate of 2 pounds to 
each 50 gallons of solution was applied to the vines when they were 
almost in full bloom, no decided decrease in the setting and maturity 
of the berries seemed to occur on those plats on which the spray 
was not applied forcefully or on a nearly horizontal plane. It will 
be noted, however, in Table 4 that the percentage of unfertilized and 
immature berries, i. e., the very small, dried, and undeveloped ones, 
but which were free from fireworm injury, was slightly, and in some 
cases considerably, increased in all the sprayed plats except F as 
compared with the respective untreated ones, the three plats with the 
highest percentage of berries of this kind being plats B, C, and Gr. 
Some explanation of this may possibly be found in the fact that in 
two of these plats, namely, B and G, the spray was applied forcefully 
with the Bordeaux nozzle on a nearly horizontal plane, which prob- 
ably could have seriously affected the fertility of the blossoms, as in 
some cases they were almost blown from the uprights. Plat C re- 
ceived four rather forceful applications with the spray gun, and this 
also may in a measure account for the high percentage of unfertilized 
berries picked from this plat. 
It is generally recognized among cranberry growers and others 
familiar with cranberry culture that the presence of a large amount 
of wet weather during the blooming period sometimes results in a 
small crop of berries. Whether or not the wet weather causes a de- 
creased crop by preventing the ordinary pollenization by insects or 
by destroying the fertility of some blossoms still seems to be a matter 
of conjecture. Since all the plats were affected by the same set of 
natural conditions, however, it would seem logical to suppose that 
the spraying of the vines while the blossoms were open with a type 
of nozzle which delivered a forceful spray on a more or less hori- 
zontal plane, and which thus thoroughly wet the floral organs, might 
have caused the comparatively small crop on the plats thus treated, 
by the sterilization and mechanical destruction of the blossoms. 
On the other hand, a certain rather beneficial effect in addition to 
the control of the fireworm was observed from the use of the nicotine- 
sulphate-and-soap solution, especially on the McFarlin variety. On 
