No. 52531. 



Floaters. Metacentres. Displacing Cylinders. 



345 



52523. 1:12. 



52526. 1:3. 



52521. 3: 10. 



52 528. 1 : 2. 



52 529. 1 : 2. 



s. d. 



52.521. Float, after Hartl, Figure (Ztschr. f. d. phys. u. chem. U. 9, 1896, p. 121) . 0. 18. 



The apparatus is used for explaining the conditions for the floating of the body, and also for 

 explaining the difference between hydraulic and hydrostatic pressure. 



52.522. - - idem, different pattern (Ztschr. f. d. phys. u. chem. U. 9, 1896, p. 122; Fr. 



phys. Techn. I, 2, Fig. 2419) 0. 18. 



52.523. Buoyancy and Metacentre Apparatus, as suggested by Haedicke, Figure, glass 

 vessel with discharge cock, floating body with adjustable web and stand with holder 



(Fr. phys. Techn. I, 2, Fig. 2422) 3. 0. 



52.524. Half-Cylinder for the Metacentre, of wood, as suggested by Friedr. C. G. Miiller (M. 



T., Fig. 70) 0. 2. 



52.525. Section of Cylinder with 2 equilibrium positions (Fr. phys. Techn. I, 2, Fig. 2423). 0. 3.0 



52.526. Cold Water Float, Hollow Brass Sphere, Figure, for demonstrating the change in 

 specific gravity of water by heat, floating in cold water and sinking in warm, 40 mm 

 diameter, without glass vessel 0. 4. 



52.528. Glass Body, Figure, floating in cold water, sinking in warm water or alcohol . 0. 1. 6 



52.529. Small Flask and Watch Glass, as suggested by Al Biruni, for determining the specific 

 gravity of solids, Figure (W. u. E. phys. Prakt., Fig. 36; Fr. phys. Techn. I, 2, 



Fig. 2303) 0. 2. 



51,746. Displacing Cylinder, for determining the specific gravity of solids, Fig. 51,746, p. 250, 



with lateral eduction pipe (W. D., Fig. 57 [52]) 0. 5. 



52,531. Displacing Apparatus as suggested by Eebenstorff, cf. Fig. 52,533; specially suitable 

 for rapid density determinations on pieces of mineral as large as a man's fist, also 

 for students' use (Ztschr. f. d. phys. u. chem. U. 19, 1906, p. 149); small pattern . 1.16.0 



The apparatus comprises: 1 vertical cylindrical glass with lateral tubulure, 3 stoppers with 

 different discharge tubes, 1 float going to 350 grams, 1 calibrated receiving vessel for 600 com, graduated 

 every 5 com, 1 linoleum disc for protecting the bottom of the cylindrical glass. 



Cl. 731, 780, 



737, 4162, 775. 



