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SAFETY-VALVE. Professor Thurston, an eminent contemporary philosopher, who is a device for opening and shutting.

Name of Machines. Maximum. Minimum. Holmes 1,523 1,523 Alliance 1,953 1,953 Gramme (No. 1). 6,663 4,016 Gramme (No. 2). 6,663 4,016 Gramme (No. 1). 6,663 4,016 Gramme (No. 2). 6,663 4,016.