Silkworm from J apan. 379 
out several days ; they were placed on the tree with the other five 
and the refraicheur used. At 1 p.m, temperature 54°, wind KE. ; 
one more larva emerged from lot 3, and it was also placed on the 
tree. . 
May 5th. This morning was sunshiny and warm; minimum 
temperature during night 52°, at 8 a.m. 70°, increasing up to 85° 
in sunshine, in shade 55°—60°. The larvee have all settled and 
fed; at 8 a.m. three larvee of No. 1 and four out of Nos. 2 and 3 
emerged ; at 9 a.m. two more of No. 1 and one other emerged ; 
they were all placed on the tree. The two eggs which had pre- 
viously been opened for examination (wherein a worm had been 
seen of a bright yellow colour but motionless), and which had 
been kept in a box in the greenhouse, this morning simul- 
taneously gave birth to two lively larve. 
May 6th. This morning the sunshine was excluded by a blind 
being down ; minimum temperature during night 54°, at 8 a.m. 
56°. I drew up the blind and let in the sunshine, the tem- 
perature on the tray rose to 75° and 80°, and at 9 a.m. had 
sunk in the shade to 65°; four larvae emerged, two from No. 1, 
two from No. 3; about 7 pm. two more larvee emerged; the re- 
fraicheur was freely used during the day: two larve dropped 
from the tree looking weak and thin, they were replaced. All 
my manipulations of these larvae were made by means of a stiff 
pointed badger’s-hair brush, which was inserted under the larva, 
and by means of a slight jerk and twist the little creature was 
elevated and dropped into his place. The larve do not cling so 
tightly with their claspers to a leaf as do the larvee of B. Cynthia, 
which would perish and be torn limb from limb rather than be so 
roughly treated. 
May 7th. A warm night, minimum temperature 58°, in sun- 
shine at 8 a.m. 75°, in shade 62°; at 8 a.m. two from No. 1 and 
three others emerged, these were all placed on the same oak 
tree. Twenty-five larvae were counted on the tree before those 
newly-born were added, so that up to this time none had 
perished. 
May 8th. Minimum temperature during night 56°, at 8 a.m. in 
sunshine 70°, at 8*30 a.m. 80°; seven larvae emerged by 9:30 a.m. ; 
they were placed on an oak tree in the greenhouse by way of experi- 
ment, as I thought that the room upstairs was too cool; the oak 
tree was previously syringed by means of a hydropult; the young 
larvee were observed to place their mouths to the water drops 
and imbibe fluid, at least the water diminished: it was observed 
