awe) ap an uf Smart: As RNS De ee 
‘4 ¥ “a nes - a fia” > U ~e ? 4 ss 
; 1 Le 7 a - . Gee th 4 
_ Job? s tears (Coix), Polytoca, Chionachne, and Sclerachne. Tats quar- 
corn 























or thet the States may have a chance to renee ht such products if desired. 
ving L. Bailey, formerly connected with the gipsy-moth force, has been trans- 
40 the Board to assist in the supervision of the disinfection of imported © 
at Boston. 
FOREST INSECT INVESTIGATIONS 
A. D, Hopkins, In Charge. 
Pield Station, arranging it under the heads of "Deciduous" and "Coniferous" 
“There are ceentys -six species of deciduous trees represented in the nursery by 
hundred and fifty-eight individuals. Most of these are oaks and are used in ex- 
‘iments on leaf feeding insects and gall makers. 
In the coniferous nursery there are twenty-six species represented by one 
asand three hundred and thirty-eight individuals. Four new conifers have been 
to the nursery since last report. These are Pinus scopulorum, Pinus edulis, 
laricio and Pinus taeda, 
ance the last report one hundred and fifty-four trees have been numbered and 
dual observations are being kept on these trees, in connection with the ex- 
nts with the insects. Most of these trees are being used in experiments on 
7 0 recently introduced pests, Evetria buoliana and Diprion simile, 
Tt is noted that most of the seedlings which came from the Pacific Coast had 
foliage winter killed and were considerably later in commencing to grow than 
ies from ether localities. An interesting comparison can be made between the 
plots of Pseudotsuga taxifolia. In one of these the seedlings came from Oregon 
) Svery tree showed considerable winter killing of the foliage. In the other plot 
ep cotings came from Colorado and there was no winter killing of the foliage of 
nce ast report (see Bureau Monthly Letter for November 1915) ninety-nine 
9s have been lost either by winter killing or other causes. 
T. B. Snyder left Washington on May 9 to investigate the character and extent 
ge to “Australian pine" trees (Casuarina equisetifolia) in southern Florida, - 
restid beetle, Chrysobothris impressa Fab., an insect presumably introduced 
8 country. According to W, S. Fisher the species occurs in Dutch Guiana, 
mingo and probably occurs in Cuba. The Australian pine, a rapid growing, 
. tree is planted in large numbers in southern Florida in groves along road- 
$ and land developed along the seacoast. This buprestid breeds in the native 
| mangrove tree in nearby swamps, and had previously been collected at Key West 
| Schwarz. 
a invae of the beetle girdle the cambium on the young Australian pine trees 
listigure, greatly weaken or kill the trees. 

. Rohwer has recently completed a summary of the nursery connected with the 
SS 

» : 
" 
