COLLECTION OF MATERIAL. Ill 



by the Postmaster General certifying that said institution has been found to be 

 entitled, in accordance with the requirements of this regulation, to receive such 

 specimens." 



The regulation includes not only cultures, but "specimens 

 of diseased tissues." The specifications prescribing the man- 

 ner of packing, which are minute and complicated, may be 

 obtained from local postmasters. 



