205 
ciable extent, since only the surface of the wood is cauterized by 
it and there is no vital connection between this wood and the 
callus which covers it. When used on the elm, it is prevented 
from adhering at times by water-blisters peculiar to this tree. In 
these cases it should be rubbed off and another coat applied. 
Vounds made by accident may be treated similarly to those 
made in pruning, after the injured tissues have been removed. 
Split trees should be joined with a bolt instead ofa band. Bruised, 
loosened, or dead bark should be entirely cut away, since it can 
never aid in repairing the injury, but, on the con peas en- 
courages decay and prevents he growth of new 
wood should be removed and the cavity painted wn pei 
then plugged with dry oak-wood or cement and this smoothed 
on the outside nearly even with the trunk and coated with tar. 
If the cavity is not made thoroughly antiseptic, however, the use 
of any of these fillings is of doubtful advantage, since the exclu- 
sion of dry air and light tends rather to encourage than to pre- 
vent decay. In case the tree is hopelessly diseased, anything 
that will strengthen the trunk or conceal an unsightly wound 
may be considered advantageous, unless it prevents proper in- 
spection of the tree and in this way becomes dangerous. 
W. A. Murrice. 
THE AQUATIC GARDEN. 
To the north of the Museum Building is a chain of three lakes, 
occupying a depression separating the fruticetum plain from the 
region south of it. The western member of this chain is the 
largest, and the easterly one but a small pond, its eastern brink 
separated from the Bronx River by a narrow bank. It is the 
middle lake, both as to location and size, which is the subject of 
the illustration accompanying this article. This is being devel- 
oped as an aquatic garden, and, although still in a formative 
stage, has attracted much attention during the past summer, and 
still continues an object of interest to visitors. 
The view of this lake here presented is that seen from the 
eee separating the lakes, from a point just to the north of 
