CALORIFIC VALUE OF PHILIPPINE COALS. 201 



Langbein, H. Ztschr. f. angew. Cheni. (1900), 13, 1235 et seq.; cf. Bertlielot, 



loc. cit. . 



Mahler, P. Gompt. rend. Acad. sci. (1891), 113, 774; Bull. Soc. encourag. ind. 



nat. (1892), 91, 317 to 374; Contribution il I'etude des Combustibles, Paris, 



Librairie polytechnique Baudry et Comp. (1893); Journ. Soc. Chem. Ind. 



(1892), 11, 840; Ztschr. f. angew. Chem. (1892), 5, 491; cf. Stobmanu and 



others, Journ. f. prakt. Chem. (1894), N. F. 49, 100. 

 Parr, S. W. Journ. Am. Chem. Soc. (1900), 22, 646. 



Scheukkr-Kest.ner, a. Method described. Bull, industr. Mulhouse (186S), 712. 

 SCHWACKHOFER, F. Ztschr. f. anal. Chem. (1884), 23, 453. 

 Stohaiank, F. (Frankland's improved) Journ. f. prakt. Chem. (1879), N. F. 



19, 115; (1885), 31, 273; Landwirthschaftl. Jahrbiicher (1884), 13, 513; cf. 



V. Eechenberg, C. Journ. f. prakt. Chem. (1880), N. F. 22, 244. 

 Thompson, L., Chem. news (1881), 43, 135; Journ. Soc. Chem. Ind. (1880), 5, 



581; ibid. (1888), 7, 868; Bull. Soc. industr. Mulhouse (1888), 500; cf. 



Frankland, also Barrus, loc. cit. 

 Thompson, W. Jotirn. Soc. Chem. Ind. (1886), 5, 581; (1889), 8, 525. 

 Thojisek, J. Thermochemische Untersucliungen, 2; Ann. d. Phys. u. Chem, 



(Poggendorflf) (1873), 148, 180, 368 (not suited for solid substances). 

 Ubb, a. Ann. d. Phys. u. Chem., (Poggendorff) (1840), 75, 48. 

 VoLCKNER, C. Ztschr. d. osterr. Ingenieur- u. Architektenvereins (1882), 31; 



Jahresbr. d. chem. Technol. (1883), 28, 483. 

 Williams, H. J. Pop. Sci. Monthly (1899), Aug. 



To the above may be added the very early imperfect forms which are 

 of interest only fi'om an historical point of view. 



Crawford, Experiments and observations on animal heat, London (1788); Dal- 

 ton, Ein neues System des chemischen Theils der Naturvvissenschaft, Berlin 

 (1812), 87; Davy, Essay on Heat, Light, etc. (1799); Works II, London 

 (1836); Lavoisier and Laplace (ice calorimeter), Histoire de I'Academie de 

 France (1781), 379; Oeuvres de Lavoisier, II; Eumford, Ann. d. Phys., 

 (Gilbert) (1813), 45, 1; (1814), 46, 225; Phil. Trans. Roy. Soc. London 

 (1798), 88, 80. 



FiSHEE, F. Polytech. Journ., (Dingier) (1879), 234, 390; Chem. Centralhl. 

 (1880), III, 11, 97 has critically collected the methods and apparatus for 

 the determination of the heating power of fuels, giving a description of some 

 of the early calorimeters brought into use after the ones given above; and 

 v. Knorre, G. Chem. Ind. (1894), 17, 93 and 125 has collected some of the 

 latter literature. 



