264 



General Mechanics. 



,,. :,iH44 



51847. 1 : 18. 



51 848. 1:10. 



51,844. Water Jet Projectile Apparatus, combined with Hagenbach's Projectile Parabola, as 

 suggested by Weinhold (W. D., Fig. 68), Figure 



5I.X45. Water Jet Projectile Apparatus (Friedr. C. G. Miillor's) (M. T., Fig. 37) 

 *:,l.si(i. Lantern Slide of the Trajectory of a Krupp 24-cm Gun (M. T., Fig. 33) 



~> I. si 7. Apparatus for showing the Projection Parabola (Ducrue's), Figure (Fr. phys. 



Techn. I, 2, Fig. 3185; Bohn, Physikal. App. No. 28, p. 25) 



The missle, a chalk ball, rolls out of ;m adjustable bent tube, or is cast out of a straight tube 

 by means of a spring, leaving the parabola traversed on a dead-black board. 



5l.si8. Projectile Diagraph (.Salchcr's), Figure (Ztsohr. f. d. phys. u. diem. U., 17, l"oi. 

 page 60) 



The essential part of the apparatus is formed of a universal parallelograph consisting of 4 bars 

 of equal length and 4 of half this length, linked together. No matter how the .-tainl i- extended, the 

 4 external points 1, 2, 3 and 4 always define a parallelogram. 



a s. <i. 

 1.16.0 



4. o.o 



0. 1.6 



1. 15.0 



12. 0.0 



Can be used with the projection apparatus. 



Cl. 37 



l, 474. 



