Croll, Mr.-on force and its determination, 94-96 Crookes, Sir W.-on renovation of energy, 26; on radium and radio-activity, 42, 43 cryptogamous plants, fossil history, 219 Crystallization, 63, 64 Darwin, Mr.-on the "law of continuity," 57; on spontaneous generation, 58; on the mental gulf between man and brute, 71; on the origin of language, 79, 178; on "creation," 91; on the structure of the eye, 91; on chance as a factor of the world, 116; on pain and suffering as an objection to design, 119; disclaims achievements attributed to him, 150; his system, 153 seq.
"The Old Riddle and the Newest Answer"
John Gerard
Dr. Debey estimates the number of species as amounting to more than two hundred, of which sixty-seven are cryptogamous, chiefly ferns, twenty species of which can be well determined, most of them being in fructification.
"The Student's Elements of Geology"
Sir Charles Lyell
2. cryptogamous acrogens: Acrogens: Mosses, equisetums, ferns, lycopodiums- Lepidodendra.
"The Student's Elements of Geology"
Sir Charles Lyell