PROCLAMATIONS, 1937 purposes, and the names and addresses of at least two well-known ornithologists, principals or superintendents of educational or zoologi- cal institutions, officials or members of zoological or natural history organizations, or instructors in zoology in high schools, colleges, or universities, from whom may be obtained information respecting the applicant's status as a scientific investigator. The applicant must furnish such other information touching his fitness to be entrusted with a permit as may be called for by the Secretary. 3. A permit may limit the number and species of migratory birds Limitations. or their nests or eggs that may be taken thereunder, and the places where, time when, and means by which they may be taken, and may authorize the holder thereof, when possessed of an equivalent State permit, to possess, purchase, sell, exchange, and transport migratory birds and their nests and eggs for scientific purposes but not to pur- chase or sell to any person not authorized by these regulations or by a permit issued thereunder to sell or purchase such birds, nests or eggs, or it may limit the holder to one or more of these privileges. Public museums, zoological parks and societies, and public scientific and edu- cational institutions may possess, purchase, sell, exchange, and trans- port migratory birds and their nests and eggs for scientific purposes, without a permit, but no such birds, nests, or eggs shall be taken with- out a permit or purchased from, sold to, or exchanged with a person not authorized by these regulations or by a permit issued thereunder to sell, purchase or exchange them. The plumage and skins of migra- tory game birds legally taken may be possessed and transported by a person without a permit. 4. A taxidermist, when authorized by a permit issued by the Taxidermists. Secretary, may possess any migratory bird, or nest or egg thereof delivered to him for mounting or other preparation by any person who has legally taken or legally possesses it and may transport such bird, nest or egg in consummation of such purpose when likewise authorized by the State in which such permittee is operating. very tBook and records such permittee shall keep books and records correctly setting forth kep the name and address of each person delivering each migratory bird or nest or egg thereof to him, together with the name of each species, the date of delivery, the disposition of each such bird, nest or egg and the date thereof, and such books and records shall be available for Inspetion. inspection at all reasonable hours on request of any authorized repre- sentative of the Department of Agriculture. 5. No permit issued by the Secretary authorizes the taking, posses- tate permits. sion, sale, purchase, exchange, or transportation of any migratory bird, or nest or egg thereof, unless the permittee has in his possession while exercising any such privilege a valid, subsisting permit of equiva- lent tenor issued to him by the State in which he proposes to operate. No permit issued by the Secretary authorizes the transportation of any migratory bird, or part, nest or egg thereof from Mexico into the United States unless such bird, or part, nest, or egg is accompanied by a Mexican export permit. Permits are not transferable and are revocable at any time in the discretion of the Secretary. A permit Revocation. revoked by the Secretary shall be surrendered to him by the person to whom it was issued on demand of any employee of the United States Department of Agriculture authorized to enforce the Migratory Bird Treaty Act. Whenever requested by the Chief of the Bureau, the eports. permittee shall submit to him such report of his operations under the permit as may be called for, and in any event shall file with the Secretary, on a form provided therefor, on or before January 10, a full report of his operations during the preceding calendar year. Fail- ure to make the reports herein provided for will be cause for revocation of the permit.