great scientific and practical knowledge. Thus the matter rested for more than a year al though we had many inquiries about 'the correctness or incorrectness' of Mr. Frost's experiments. The only person who seems to have given this subject his profound attention is Dr. Hay. craft of Greenwich England who has pub. @ 1851 SCIENTIFIC AMERICAN INC., 1851-05-10

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great scientific and practical knowledge. Thus the matter rested for more than a year al though we had many inquiries about 'the correctness or incorrectness' of Mr. Frost's experiments. The only person who seems to have given this subject his profound attention is Dr. Hay. craft of Greenwich England who has pub. @ 1851 SCIENTIFIC AMERICAN INC., 1851-05-10

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