◆ SpookStack

¥/ ve \ anywhere in the world. In addition, he has under his immediate supervision the crime statistics work which was established on Beptember 1, 1950, involv- ing the collection of statistics on crime from the various law-enforcement officials of the United States for dissemination to interested officials and agencies. Also, Mr. Hoover has under his supervision the Technical Laboratory of the Bureau, wherein scientific detection aids are utilized in connection with the solving of crimes under the Bureau's jur risdiction. The experte of this laboratory aleo assist State and local law-enforcement officials through- out the country in the use of scientific crime detection aids, such as hand- -_ writing and typewriting analysis, the examination of blood, hair and bulletgy <:. the use of ultra-violet light in the examination of substances and the decoc- woe g: ing of cryptographic messages.