







cases at least this weakening of the timbers was an important con- 
tributory cause of the loss". 
¥ ' The insects usually responsible for this type of injury are 
perms tes and "powder post™ beetles. Damage to timbers of buildings 
termites is occasionally serious even in the Northern States. 
Powder post" beetles also often seriously injure the beams of build- 
epee But this is the first instance of the interrelation of storms 
and insects in the destruction of buildings that has come to our 
notice, although similar interrelation between insects and storms in 
rs a of telephone and telegraph poles has been commonly 
no @ 
> We will be glad to receive specimens of the insects or insect 
damaged wood from buildings in the region of the storm above referred 
to. 
Mr. Rohwer has just completed a summary of the first year’s 
growth of the nursery connected with the Hastern Field Station, This 
“nursery now consists of twenty-three species of deciduous trees which 
are represented by one hundred and thirty specimens. There were one 
hundred and tuirty-nine planted, which makes a loss of nine. Of 
these one hundred and thirty trees, eleven are at present used in ex- 
‘periments to determine the life history of insects injurious to forest 
trees. Some very useful experiments are being carried on with trees 
Por Robinia pseudacacia to determine the life history of Ectydolopha 
g _insiticiana. These experiments are under the direction of Mr, Hein- 
rich. 
ag The coniferous nursery is composed of three yoaed ee of Abies, 
two Species of Larix, three species of Picea, fifteen species of 
Pinus and one species of Pseudotsuga, a total of twenty-four species, 
‘There were twenty-one hundred and ninety-nine coniferous trees plant- 
6d. Of these, fourteen hundred and sixty-six are living, which means 
a loss of thirty-three and one=third per cent, Thirty of the conif- 
srous trees are now used as experiments. Most of these experiments 
&re for various species of Evetria and Diprion. Some of the conifer- 
ous trees which have done especially well are Pinus ponderosa, resin- 
08a, sylvestris and divaricata. The two species of Larix show marked 
difference in their adaptability to eastern conditions. .In the plot 
of Larix occidentalis there are only ten trees living, ninety-two 
having been killed by the summer. [n the plot of Larix leptolepsis 
(Japanese larch) there are sixty-five living trees and some of these 
) have made phenomenal growth. 







