616 



Specific Heat. 



No. 55 149 



55152. 1 = 11. 



55 151 B. 1:5. 



55 151 C. 1:5. 



Specific Heat. Calorimetry. Determination of Calorific Value. 



55.149. Apparatus after Tyndall for Shewing the Relative Magnitude of Specific Heat of Dif- 

 ferent Metals, Figure (W. D., Fig. 385 [365]; M. P., Ill, Fig. 97 [II, 2, Fig. 175]), 

 with five metal spheres of iron, zinc, copper, bismuth and lead, tripod and six paraffin 

 slabs 



55.150. - - i (1 e in, after Kolbe, Figure, with device for scraping the spheres, heating 

 vessel, tripod and glass cylinder with vaseline mixture for catching the heated spheres 

 of iron, zinc, copper, bismuth and brass (Ztschr. f. d. phys. u. chem. V., 14, 1901, 

 page 160) 



55.151. Apparatus for Specific Heat, after Schoentje-s, Figs. A, B and C (Ztschr. f. d. phys. 

 u. chem. U., 14, 1901, p. 31) . . . 



The apparatus comprises four parts: a gas burner, a easting mould for paraffin slabs, Fig. A; 

 a heating vessel, Fig. B; and tin; main part a stand and a frame with four cylinders (of the same 

 weight), of iron, brass, tin and lead, which are of the same external diameter and the same height 

 and which are fastened on sliding rods, Fig. C. 



After the cylinders have been sufficiently heated in the bath. Fig. B, the frame is placed on the 

 stand in which ft paraffin slali has been fixed'; the cylinder- arc then allowed to fall simultaneously 

 on the slab by releasing a catch. The four cylinders then sink into the slab to different depths in 

 proportion to their specific heat (see Fig. C). 



:>.">. 1 .")!'. Ice Calorimeter after Lavoisier and Laplace, Figure (M. P., Ill, Fig. 99 [II, 2, 

 Fig. 177]; Gan.-Eein., Fig. 426; M. T., p. 151) 



-,:,,! 53. _ idem, after Bunsen, Figure (M. P., Ill, Fig. 101 [II, 2, Fig. 179]; Gan.- 



s. d. 



.Man., Fig. 528; Gan.-Eein., Fig. 427) 



0.12.0 



1. -2.0 



3. 5. 



2. 0. 



1. Mi. 



Cl. 1833, 1334, 1836, 

 1833, 1835,1837. 



