Vol, XV.---No. 1. diag NEW YORK, JUNE 30, 1866. ($3 per Annum, 7 CIN ADVANCE.) [NEW SERIES.] " CROOKES UN DISINSECTANTS. improved Balanced Governor Valve. | the levers, K—a short one being fitted to the shaft, Any one familiar with the principles of a steam William Crookes, F.R.S., editor of the…
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