9 
the planks a pit about 3 feet deep is dug. This should be large enough 
for two men to stand in and place the empty carboy in position and 
lift it out when filled. A large-mouthed funnel made of sheet lead is 
placed in the mouth of the carboy. A piece of cast-iron piping about 
6 or 8 inches long and properly threaded is a convenience, but not a 
requirement. This, if available, is screwed into the opening in the 
drum, which is arranged so that the acid will pour into the funnel lead- 
ing to the carboy. A piece of heavy plank or other suitable lumber 
should be strongly spiked across the ends of the two plank supports of 
the drum to prevent its being rolled too far forward. Whenever there 
is a suitable platform available, or timber is available for making 
a rough one, the trouble of digging the pit can be obviated. It is not 
28-36| 33-40 | 32-39 
x ; 
Badr 
miei | a eee 
10% 
= Sie ee 
10% oe if 20% 
ye 54 38-50/37-51 |36-40 
= 
A FFAG J le 
Fig. 2.—Diagram of regularly set grove in process of fumigation with an outfit of four tents: X, X, trees 
missing. (From Morrill.) 
advisable to empty drums from railroad stations or packing-house plat- 
forms, as more or less acid is ustially spilled. No one should stand 
near the carboy when the acid is being poured, and care should be taken 
to prevent any spattering of the acid from reaching the face. When 
handling acid it is always well to have water at hand for use in case 
of accident. With proper care sulphuric acid can be handled without 
danger of any kind. 
DIAGRAMS OF GROVES, AND DOSAGE TABLES. 
While it is not always necessary that diagrams of groves be made, 
it is always advisable as a matter of record and to prevent errors. 
Figures 2 and 3 illustrate methods of making diagrams when trees 
[Cir. 111] 
