Silkworm from Japan. PRS, 
so that one end remained in some water placed in a jam-pot 
beneath, upon which the tray rested; over the spray was placed 
a cylinder having sides of perforated zinc, but covered at the 
top with black gauze, put on to prevent loss of the larva by 
straying. The larva was now gently but firmly detached from 
the paper. It resisted at first, but soon yielded to the instrument 
used, a fine pointed stiff badger’s-hair brush ; it was then placed 
on an oak leaf of the spray, and a drop of water was deposited on 
the leaf close by; the larva was soon observed to apply its mouth 
thereto, and subsequent observation convinced me that this action 
was the mode of drinking. 
April 27th. ‘The minimum temperature 60°; at 9 a.m. 62°; at 11 
a.m. 64°. During the night the larva rested at the edge of the 
leaf, which was found in the morning to be slightly nibbled. At 
7 a.m. a second larva came out, and at 11 a.m. two more; all the 
four larvae were born from Mons. Guérin-Meéneville’s eggs; about 
11 a.m., one of Mons. Personnat’s eges produced a larva: they 
all seemed weakly, were placed on the oak spray in a similar way 
and were supplied with water; the temperature at noon was 66°, 
in shade out of doors it was 70°; it was therefore fortunate that I 
had brought the worms indoors and had placed them so that they 
could conveniently be watched; had they been out of doors 
they probably would have emerged in greater number, owing 
to the high temperature, 70°, and, not being so closely observed, 
many might have perished; the oak spray was twice watered 
with the jets from an eye douche, which made a capital syringe ; 
several larvae were observed to feed, but the one first born seemed 
to be drying up: temperature in greenhouse 75°. 
For greater convenience I append a table of the numbers of the 
larve as they daily emerged. (Total 252. Mons. Guérin- Méaeville 
80 eggs. Mons. Personnat 142+3 opened+27 unfertile.) 
Guérin-Méneyille. Daily Total. Personnat. 
April 26 5% 1 are 1 a6 0 
a ee a 3 a0 4 ar 1 
» 28, cold day 0 ig 0 Ae 0 
he Be <r 0 ou 0 se 0 
» 30 oe 0 a 0 : 0 
May 4 AC 1 ee 4 bee 3 
“F 5 ee 5 <e 10 2€ 5 
a 6 oe 3 are 6 ee 3 
13 25 12 
