Form Bl-108 
July,1919 
UNITED STATES DEPARTMENT OF AGRICULTURE 
BUREAU OF BIOLOGICAL SURVEY 
LETTER OF AUTHORIZATION—AMENDMENT 
Washington, D. C., April IS* 1923* 
- 
Assistant Biologist.-— 
Tour latter of anthorlxation So. 131-M• “General nxpansta, B nrmu 
of Biologioal tfijpfNjf* 1923”* It hereby amended so as to authorise aetwal and 
sttateaty trameliae expeas®* of yoar aesiataat* Charles §• Bono* from Wllleo** 
Arlsona** to tut Hawaiian Islands an* regions of that® Islands aal return to 
Willoox* Arlsoae, instead of such expense* from and return to rhoenlx, Arixoaa. 
‘..i.ta letter it further amended so at to permit you to authorise* whan 
deemed expedient* the purohas® By Jfflr* %4m9 of *uoh epeoSal supplies as may 
be aeooaaaxy in the prosecution of M* eortu 
