SCHWACKHOFER'S CALORIMETER. 



35 



for ordinary every-day work, and will give good comparative 

 results when used according to directions, which must be 

 implicitly followed. The amount of calculation is reduced to 

 a minimum, and there are no delicate parts requiring extra 

 care and adjustment. For the purpose intended, it seems an 

 advance over the others previously used, which could never 

 give more faint approximations to correct results. 



SCHWACKHOFER S CALORIMETER. 



In 1884 Schwackhofer published calorimetric researches 

 on different kinds of coal, using a calorimeter in which he made 



FIG. 10. SCHWACKHOFER CALORIMETER. 



several modifications intended to render it specially applicable 

 to such fuel. 



He considered it advisable to use as much as five or six 

 grams of coal, which is six times that generally used. He 

 burnt at the same time and under definite conditions, shown 



