Prefatory note signed: J. David Thompson, chief, Division of Documents, in charge, Science Section. Additions and corrections to May 1, 1906: pages 171-172. Includes index.
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Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. (http://purl.oclc.org/DLF/benchrepro0212)
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Description based on print version record.
Available in Other Form
Print version: Library of Congress. Classification Division. Classification. Class Q: Science. Washington, Govt. Print. Off., 1905