376 Dr. Wallace on the Oak-feeding 
Guérin-Méneville. Daily Total. Personnat. 
Brought forward .. 13 25 12 
May 7 ol 3 oe 7 os 4 
” 8 oe 3 on 9 Eis 6 
9 9 ate i. cite se 10 
yon te, ie 6 Sc a kes 5c 7 
wo oll ote 7 as 14 fe 7 
ont) AZ at 6 os 9 ee & 
ke ar 1 ‘ 5 oe 4 
tee ote 3 a4 9 ee 6 
plo ane 1 ar 6 5 
yt AG at: 2 = 4 : 2 
sa tuhred Be 2 ve 3 se 1 
wuts ais 2 6 os 4 
Fe es a 3 5 oe 2 
» «20 oe 1 56 fi 6 
srineod eh 0 5 2 2 
panes yas 2B 6: clue 4 
9 23 as 1 . 1 : 0 
cer 3 2 4 : 2 
3) 20 ats 0 oe 0 oe 0 
3) 726 os 2 3 ae 1 
shee sie 0 1 ae 1 
67 156 89 
Total, 156 larve born out of 252 eggs. 
Continuing my history of these eggs, on the 28th April I observed 
that the eggs, which were in three separate lots, were looking 
mouldy. 1 examined them with a lens; fine white threads of 
mycelium were seen arising from various eggs and spreading over 
the others. I then determined to wash the eggs, with a view of 
arresting the growth of the fungus, which I considered inimical to 
animal life. I therefore washed lot No. 2 in pure water and 
No. 3 in a weak solution of liquor potassze (10 drops to an ounce 
of water); in order to wash them I placed the eggs on a linen or 
muslin cloth, and, forming it into a bag, I dipped the bag into 
water and agitated it for some seconds. When the eggs were 
removed they were a little lighter in colour, some of the gum 
having been washed off; the water was not discoloured, but the 
solution of liq. potassee was much discoloured, the gum having 
been much softened and removed, but the colour of the eggs soon 
* Onthe 24th May, one emerged at 5 p.m. 
