( 56a ) 
| September, 
CORRESPONDENCE. 
%* The Editor does not hold himself responsible for statements of fadts or 
opinions expressed in Correspondence, or in Articles bearing the signature 
of their respe&ive authors. 
THE “IMPROVEMENTS” IN EPPING FOREST. 
To the Editor of the Journal of Science. 
Sir, — There is every reason to fear that the process of converting 
Epping Forest into a park, which you have so justly deprecated, 
is being quietly pushed on, and that it has already begun to tell 
upon the fauna of the district. On the 12th instant I went along 
with an entomological friend to the Forest, and, though the day 
was most propitious, we were struck with the total absence of 
not a few kinds of butterflies which used to frequent the lower, 
or Chingford, end. I cannot help suspecting that the disappear- 
ance of the woodland pools, which have been drained to form 
the artificial lake, has something to do with the matter. I do 
not, for my part, see the necessity for this lake, especially as the 
River Lea offers full facilities for boating, bathing, and drowning. 
I found, also, that several old gravel-pits at the Epping end of 
the Forest, which I have known as the special resort of various 
inserts, have been filled up and made level with the surrounding 
ground. If this process is to continue, the sooner naturalists 
know that the Forest is no place for them the better. — I am, &c., 
E. C. 
THE EFFECTS OF BLUE GLASS. 
To the Editor of the Journal of Science. 
Sir, — Happening to take a rather prolonged look-out through a 
blue glass window which commands a view of sundry suburban 
gardens, I found the colour of the objects changed in a manner 
I should not have expedted. Whilst the walls and roofs of 
houses, garden-paths, and some trees appeared of a bluish grey, 
the lawns, the vines, ivy, jasmine, and Virginia creeper trained 
to the walls, and a large patch of lettuces n a kitchen-garden 
