24 
use, during that age, of a lattice-work tray, such as is shown in — 
Fig. 14. 7 3 
To prevent this tray from pressing upon the worms beneath, it should | 
be propped up by small blocks placed under the corners. j 
When large pieces of perfor- — 
ated paper are used they should 
be handled by two persons. By 
cutting them into smaller pieces 
and using a transfer tray (Fig. 
15) one person can perform the 
necessary work with ease. Such 
a tray is most.conveniently made 
about 13 by 19 inches inside. 
When the paper, which should 
be made about one inch smaller 
| hi each way, has been covered with 
Vic, 14.—Lattice-work transfer tray (original). leaves, and the worms have 
| come through the perforations in 
search of their food, the whole may easily be slipped into the transfer 
tray, and as easily taken from it in depositing the worms on another table. 
In gathering leaves for the worms 
it will be found convenient to eim- 
ploy a bag (Fig. 16), so arranged 
that it may be attached around the 
waistlikeanapron. Twosuch sacks 
may be made from an ordinary meal 
bag. 
The worms should be made to spin their cocoons on brush so arranged 
as to form arches between the shelves, as is shown in Fig. 19. 
For the same object the co- 
cooning ladder shown in Fig. 
17 was devised in 1842 by M. 
Davril. It consists of two cen- 
tral supports, across each side 
of which (Fig. 18) are nailed 
small strips ofabout one-quarter 
by one-half inch section, 14 
inches apart. The strips on 
one side are placed opposite 
the spaces between the strips on the other side. The ladder may be 
made about 30 by 15 inches, and the central supports about five-eighths 
inch thick. When in use the ladder is placed slantingly between the 
tables, with the central supports horizontal. 
A thermometer is a very useful adjunct to the appliances above de- 
scribed. 
Fic. 15.—Transfer drawer (after Roman). 
