APPENDICES. 
APPENDIX I. 
MISCELLANEOUS DATA AND REPLIES TO CIRCULAR NO. 1. 
The following data in reference to the Rocky Mountain locust, collected chiefly in 
1877 hy Mr. Thomas, was omitted in the former report, partly for want of space and 
partly because it was impossible to get the material ready in time. A few extracts 
were made, which will be found in Appendices XXII, XXIII, and XXIV of the former 
report. The dates of flights for 1677 mentioned therein were collated and arranged 
as given in Appendix XXIII ; hut the communications and the large amount of val- 
uable information they contain were left out for the reasons mentioned. 
It has been thought best to arrange this data by States and Territories rather than 
by date. 
In order that these communications may be understood, it is necessary to state here 
that most of them are in answer to the questions in the following circular issued by 
the commission early in 1377, as stated in our first report (p. 2) : 
CIRCULAR No. 1. 
Department of the Interior, 
Office of the United States Entomological Commission, 
, , 187 . 
Mr. . 
Dear Sir : The Commissioners are desirous of collecting, as soon as possible, all as- 
certainable facts in reference to the migrations of the Rocky Mountain locust (Calop- 
tenus spretus), and also regarding its appearance, habits, and devastations in your 
6ection. 
We present below a series of topics upon which we shall be glad to receive data 
from your locality. We expect you to dwell only on those topics upon which you 
have positive information, and shall be glad to receive any facts or views not sug- 
gested by this circular. Some of the subjects cannot be reported on till toward the 
approach of winter, while others can be considered earlier. In responding, there- 
fore, we ask our correspondents to couple their answers with the number of the cir- 
cular and of the inquiry. 
We shall be glad to receive and will determine any of the different species of lo- 
custs that occur in your locality, and particularly specimens of their different para- 
sites and natural enemies. These are best forwarded by mail, packed in cotton, 
moistened with alcohol, and placed in secure tin or wooden boxes. Living specimens 
may be sent in tin boxes, and are preferred, where they will not be too long on the 
way. 
The inquiries have reference more particularly to the present year 1877, and when 
facts are communicated that have reference to other years, correspondents will please 
be careful to specify the particular year. 
The Commissioners will refund whatever expense maybe incurred for postage in re- 
plying to this circular, or in forwarding specimens, should correspondents so desire. 
Copies of documents published by the commission will be sent to correspondents 
who forward data in accordance with this request. Communications may be sent to 
either of the Commissioners. 
CHAS. V. RILEY. 
A. S. PACKARD, Jr. 
CYRUS THOMAS. 
TOPICS ON WHICH DATA ARE REQUESTED. 
1. Date and time of day of the arrival of swarms. 
la. Direction and force of the wind at the time. 
1&. Temperature and character of the weather at the time (clear or cloudy), 
lc. Direction of the flight, densitv, height, and extent of the swarms. 
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