172 



ANNUAL REPORT SMITHSONIAN INSTITUTION, 1961 



in keeping the National Zoological Park informed as to the well- 

 being of animals and birds being held there for quarantine. 



Animals that die in the Zoo are offered to the United States Na- 

 tional Museum. If the Museum does not need them, they are sent 

 on request to reasearch workers in other institutions. 



The Zoo cooperated with the National Capital Parks and lent small 

 animals to Park naturalists and to the Nature Center in Rock Creek 

 Park for demonstration. 



Gifts of plants were received from Mount Vernon, the Botanical 

 Gardens, National Bureau of Standards, District of Columbia Water- 

 works, St. Elizabeth's Hospital, the Naval Observatory, and the 

 Soldiers' Home. A very welcome gift was a 15-by-40-foot greenhouse, 

 from the Bureau of Standards, to supply tropical plants for forage 

 and for planting in indoor cages. 



VISITORS 



In cooperation with Albert Mindlin and Samuel Rosenthal, analyti- 

 cal statisticians of the Management Office of the District of Columbia, 

 a new method of estimating the visitor attendance is being developed 

 for greater statistical reliability. 



Number of bus groups visiting the Zoo in fiscal year 1961 



Locality 



Alabama 



Arizona 



Arkansas 



California 



Connecticut 



Delaware 



District of Columbia 



Florida 



Georgia 



Illinois 



Indiana 



Iowa 



Kansas 



Kentucky 



Louisiana 



Maine 



Maryland 



Massachusetts 



Michigan 



Minnesota 



Number 

 of groups 



30 

 1 

 2 

 1 

 7 



13 

 177 



33 

 124 

 6 

 5 

 5 

 2 



16 



2 



2 



954 



11 

 9 

 6 



Number 

 in groups 



1,213 



28 



70 



40 



259 



498 



7,021 



1, 166 



4,995 



241 



200 



188 



60 



618 



90 



441 



38, 159 



64 



303 



213 



Locality 



Mississippi 



Montana 



New Hampshire 



New Jersey 



New Mexico 



New York 



North Carolina. 



Ohio 



Pennsylvania 



Rhode Island. . 

 South Carolina- 

 Tennessee 



Texas 



Vermont 



Virginia 



West Virginia.- 

 Wisconsin 



Total ... 



Number 

 of groups 



14 



1 



1 



12 



1 



269 



218 



32 



294 



16 



52 



52 



2 



1 



735 



66 



5 



3, 171 



Number 

 in groups 



541 



25 



40 



963 



26 



10, 753 



8,652 



1,241 



11,775 



604 



2,076 



2,022 



92 



35 



29, 449 



2,352 



182 



118,043 



