NATURAL HISTORY NOTES. 
1 19 
the grourul, and that was on a lovely autumn morning early, when there had 
been a heavy dew, and the lawn was covered so thickly with gossamer that at 
a little distance the grass had the effect of being covered with water, so thick 
were the drops on the web. The swallows were sitting in great numbers in the 
sheen, and I could distinctly see them turning their heads from side to side, and 
apparently drinking the dew with great content. The sight was a very lovely one. 
H’allin^^ord. M. S. Young. 
A Hidden Foe. — I have noticed this season a number of the corolla tubes 
of cowslips cut through just above the ovary. In some cases on removing the 
corolla the ovary was found to be cut longitudinally, the placenta with its ovules 
being exposed. Some of the ovules were “nibbled.” In many flowers I could 
find no cause for this, but, on a careful search Iteing made, in others I found a 
small green and very lively caterpillar concealed within the calyx. The outward 
appearance of the flowers in the umbels was quite normal. If others have found 
this larva at work I should be glad to learn its name. 
Charles F. \V. T. Williams (Bath Branch). 
Summer Migrants. — As we are daily receiving additions to our resident 
birds, perhaps I may mention, with a hope that others may follow my example 
in order to compare notes from various localities, the arrivals. Up to the I2th 
they are as follows -.—Chiffchaff, March 25; swallow, March 26; cuckoo, 
.■\pril 8; willow-wren, April ii ; ring-ouzel, April ii. The swallow and cuckoo 
have made their arrivals records for early appearances, and the ring-ouzel is a 
rare visitor. 
Astivood Bank, Worcestershire. James IIiam. 
ANSWERS TO CORRESPONDENTS. 
M. B. D. — It would be quite impossible to find room for the Report. 
H. E. B. — Please read Rule i. 
C. R. — Claytonia perfoUata. 
H. D. R. — Jubilee bonfires seem hardly suitable for discussion in N.N. 
RULES FOR 
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