Farrow's military encyclopedia : a dictionary of military knowledge . PULTUN.—An Indian term for a regiment f)f iiifan- of poimds raised one foot by a bushel of Welsh coal try PULVERMASSEN.—The German name for a kindof with wooden powder-tubes. PUMICE. .V mineral found in volcanic CdUiitriesgem rally with obsidian and porphyries. In chemi- (.14 lbs.), the following notes show the improvenuntwhich has been made: Newcomen engine (1760),,>,.iOO(KIO; the same improved by Smeaton (1772),9,.)00,-000. Watts engine {1778 to IHl.)), ,000. Coruish engine (1820), 28,000,000; the same 18
Farrow's military encyclopedia : a dictionary of military knowledge . PULTUN.—An Indian term for a regiment f)f iiifan- of poimds raised one foot by a bushel of Welsh coal try PULVERMASSEN.—The German name for a kindof with wooden powder-tubes. PUMICE. .V mineral found in volcanic CdUiitriesgem rally with obsidian and porphyries. In chemi- (.14 lbs.), the following notes show the improvenuntwhich has been made: Newcomen engine (1760),,>,.iOO(KIO; the same improved by Smeaton (1772),9,.)00,-000. Watts engine {1778 to IHl.)), ,000. Coruish engine (1820), 28,000,000; the same 1820), 30,- PUMPING-ENOINK. 609 PUMPING THE LEAM:TT PrMPING-EXGI>rE UriLT BY I. P. MORRIS & CO.,POET RICHMOND IKON WOKKS, PHILADELPHIA. PUNCHING. 610 PUNCHING. ; sameC182S), .37,000,000; same (1829), 41,; same (1839), ,000; same (), 60,000, mines, highest duty (182T), 67,000, consols, Cornwall, hisrliest duty (1834), 97,-000,000. United mines, highest duty (1842). 108,-000,000. Among the largest pumpiug-engines in theworld are tlie three wliicll were employed in thedrainage of Haarlem Lake inHolland. Each engineworked several pumps, and had an average duty of75, lbs., raised one foot by 94 lbs. of Welshcoal. One of these engines is described as follows :two steam cylinders are placed concentrically, thediameters being 144J and 84t inches. They areunited at the boUom. jjut there is a space of nearly \hin. between the inner cylinder and the top. Theareas of the pistons are as 1 to , and are con-nected to a common cross-head or cap by one prin-cipal and fou
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmilitaryartandscience
