The tourmaline. Its relation as a gem; its complex nature; its wonderful physical properties, etc., etc.; with special reference to the beautiful and matchless crystals found in the state of Maine.

Mode of access: Internet.

Deformation of beryllium single crystals at 250 C to 5000 C; final report on contract ONR-24908 to Office of Naval Research, U.S. Navy,

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Introduction to general chemistry. A graded course of one hundred lectures with an atlas of eighty plates, representing chemists, institutions, prime materials, crystals, diagrams and apparatus; and illustrations in the text

Mode of access: Internet.