TERRY AND CALISHER's RIFLE. 335 



pies in fig. 82, it is then turned up again at right angles to 

 its previous position, when the oval collar fitting into the 

 chambers, forming the point of resistance, is at once re- 

 leased, and the whole can be drawn back to the position indi- 

 cated in fig. 83. 



" The cartridge can now be introduced through the opening 

 shown ; the piston has then to be pushed forward until the 

 conical part comes in contact with its seating, when the point 

 g is forced round one quarter, and then closed over the 

 opening. The gun is now ready for capping and firing. It 

 will be observed that the oval collar is formed something like 

 the twist of a screw; the chamber into which it fits is also 

 formed in the same way; so that when the one is inserted in 

 the other and the quarter turn given by the part g, which 

 acts as a lever, it has a screwing action which drives the cone 

 into its seating with considerable force, and thus effectually 

 prevents any escape of the disengaged gases. The bore of the 

 rifle we have illustrated is the same as that of the Enfield 

 rifle, '577 of an inch diameter, being rifled in the same way 

 with three grooves, but having a twist in every 4 feet, whilst 

 the Enfield rifle has one complete turn in every 6 feet 6 

 inches. The chamber in which the cartridge lies is of the 

 diameter of the circle described by the bottom of the rifling 

 grooves, and the ball used exceeds the Enfield ball in 

 diameter by the depth of these grooves. The barrel has a 

 gradual bore from the larger to the lesser diameter, so that 

 when the discharge takes place the ball is gradually driven 

 into the rifling grooves, and presents precisely the same 

 appearance as an Enfield ball does after it is discharged. In 

 this way the patentee states he obtains greater range, force, and 

 accuracy, with the same weight of ball and powder, than can 

 be obtained by any other rifle. He has submitted it to the 

 authorities at Enfield, Hythe, and Woolwich, and it appears 

 to have undergone the severest test with complete success, 

 and to be generally approved of by those qualified to judge. 

 There is one peculiarity in the construction of the nipple 

 which we had almost forgotten to mention it consists in 

 boring it in such a way, that the opening next to the per- 

 cussion-powder in the cap is as large as can be made con- 

 sistent with safety, gradually becoming smaller until it 



