V/etraore -2 
reference. Although the primary object of this investigation 
is to ascertain the economic value of the Porto Rico birds it 
I ' ^ 
is important to make up skins of the various species which come 
under your observation for preservation in the Biological Survey 
collection’'.'^ These you will forward from time to time as cir- 
cumstances warrant . 
If during your stay on the Island there are any noticeable 
outbreaks of insect pests, note carefully what if any birds at- 
tack them. 
It is neither practicable nor desirable to give you detailed 
instructions as to your work and much must be left to your own 
aiscretion. You are expected to make bhe most of your oppor- 
tunities and to secure as much information as possible on the 
subject under investigation. 
If you have an opportunity while in Hew York, it may be 
well to visit the American Museujn of Hatural History and fajuil- 
iarize yourself v/ith any Porto Rican birds which are not found 
in the Rational LIuseum collection, which you have already 
studied . 
It is understood that the Department of Agriculture of 
Porto Rico IS to pay your expenses while v/orking on the Island, 
and at the expiration of each month you will fonmrd to the 
proper officer an itemized statement of expenses, when you will 
be promptly reimbursed. 
You should keep the Bureau advised as to your postoffice 
address and in regard to any matters of special interest. You 
will make a monthly report to this office of the general pro- 
gress of your work so that supplementary instructions may be 
