[7-463.] 
TENTH CENSUS 
te a Pepariment of the A{nterior, 
ee 
— CENSUS OFFICE, 
3 Brookline, Mass... ISS 
DEAR Srr: It has been necessary for the investigation into the Forest Wealth of the United States, 
“ : 
n in connection with the Tenth Census, to make large collections of the wood of all indigenous North 
American Trees. I have had such portions of these collections as have not been used up, in the experiments 
made with the view of determining the -cofiparative value of our woods, worked into museum sets, which [ 
am. instructed by the Superintendent of Census to distribute among the Agricultural Colleges and Tech- 
nical Schools of the United States established by the acts of 1863-764, and among other institutions of learning 
in this country and Europe. These sets are generally quite full, and contain a large number of rare and little- 
known species. The specimens have been carefully prepared; they are six inches long, but vary somewhat 
in Size; generally, but not always, they show the bark, sap, and heart-weodotFhe tree, and are admirably 
adapted to illustrate the characters of North American woods. 
Recipients of these sets will be expected to pay the cost of packing-cases and transportation from 
Brookline. 
Should you desire to receive one of these sets for the establishment over which you preside, you are 
requested to inform me of the fact at your early convenience, and instruct me in what manner you desire to 
have them sent to you. 
The sets will be ready for distribution during the month of April. 
Yours, very truly, 
Special Agent Tenth Census. 
