442 
means of the prostrate primary trunk. Again specially good tree 
which have met with such an accident can be saved as has been 
clone with a smaller sized tree in the Botanic Gardens, which pro- 
duced an extraordinary flow of latex, but was unfortunately knocked 
over by another tree falling upon it. 
1 he closeness of the large trunks produced will also be noticed 
in the photograph. The original tree had it not fallen would cer- 
tainly not by this time have given so large an area of tapping bark, 
nor would it have been possible to have got single trees of the size of 
these stems on the same area of ground as the stems are, in the time 
m which these have taken to attain' their present development. So 
that it will be seen that these layered trees besides being interest- 
ing as a curiosity may be also of 'some practical utility.— Editor, 
EXPERIMENTAL RUBBER TAPPING- AT THE 
BOTANIC GARDENS, SINGAPORE. 
{Continued . ) 
7 he tables of three experiments of tapping by different methods 
have already been published and experiment ' IV is now put up. 
This experiment concerns the herring-bone mode of tapping only 
on trees tried of different sizes; and shews the difference between 
tapping daily and on alternate days, and between morning and 
evening tapping. The result, although not absolutely so, confirms 
the opinion of the advantage of alternate over daily tappings and 
of morning over evening tappings. The exception occurs between 
Xo. I (daily) and No. Ill (alternate days) the small difference in 
this instance being in favour of daily tappings. With No. 11 and 
So. !\ the difference in favour of tapping on alternate days will 
be noted and also the difference in the aggregate girth of the trees 
as favouring alternate days. 
With large trees 3 feet and upwards the tappings were far from 
exhaustive and the scars were only moderate but they were stopped 
at the eighteenth tapping for the sake of uniformity. By referring 
to the tables attached for Nos. 2, 5 and 4, it will be seen that the 
eighteenth tapping in all the groups was normal and in some 
only slightly below maximum yield. 
The Rubber has been prepared in the form of “biscuit" and 
contains a low percentage of moisture, probably under 2 per cent. 
The result of the fourth experiment is as follows: 
