26 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1907. 
public museum shall thereupon revert to the national collections and 
be placed in the proper national depository. 
Wasuineton, D. C., December 28, 1906. 
The foregoing rules and regulations are hereby approved in tripli- 
eate and, under authority conferred by law on the Secretaries of the 
Interior, Agriculture, and War, are hereby made and established, to 
take effect immediately. 
E. A. HircHcocx, 
Secretary of the Interior. 
JAMES WILSON, 
Secretary of Agriculture. 
Won. H. Tart, 
Secretary of War. 
The Institution has promptly acted upon all requests for advice, 
either through the Bureau of Ethnology when archeological sites 
were concerned or through the National Museum when paleonto- 
logical collections were desired. 
The national domain possesses priceless treasures for the archeolo- 
gist and for the public generally, and this regulation of excavation is 
in the interest not only of science but of the whole people. 
CASA GRANDE RUIN IN ARIZONA. 
As was stated in the previous report, Congress appropriated $3,000, 
to be expended under the supervision of the Secretary, for the pro- 
tection of the Casa Grande ruin, in Pinal County, near Florence, 
Ariz., and for excavation on the reservation. This work was placed 
in the immediate charge of Dr. J. Walter Fewkes, of the Bureau of 
American Ethnology, an experienced archeologist, and the results 
reached have been beyond expectations entertained. All the mounds 
on the reservation have been opened and about three-fifths of the com- 
pound excavated. In the course of the work there was found a wall 
which not only surrounds Casa Grande but also 43 large rooms. The 
newly discovered walls have been repaired and protected, and when 
completed there will be restored for posterity a representative pre- 
historic settlement of the desert of southern Arizona. 
A preliminary report of the first year’s work has been prepared, 
and since the close of the fiscal year has appeared in the Smithsonian 
Miscellaneous Collections. Congress granted a second appropriation 
to complete the work, which will, as in the previous year, be carried 
on under the direction of Doctor Fewkes. The very interesting 
collections which have incidentally been found have been deposited 
in the National Museum. 
The appropriation for the protection and excavation at Casa 
Grande was made two years ago at the recommendation of the 
Department of the Interior, but the work was placed under the 
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