pped paper disks va- and used when the gun is to be elevated. Working models of least as many more employees, making 30,000 persons to riously colored, these disks resembling those used with an or- this carriage have been tested at Washington with success, whom the welfare of a single company is a… … altogether the instrument is one which serves its lowest position. The quantity of water PNEUMATIC GUN CARRIAGE AND ELEVATOR.-Fig. 2 to illustrate some exceedingly interesting op- would be varied with the powder charges em- ployed ; with heavy charges the quantity of tical effects. water is…
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