COMBINATION OF ACIDS AND BASES. 89 



result of these experiments coincided almost exactly with the result obtained 

 when the glass vessel was employed. 



The weight of the glass vessel which contained the alkaline solution was 58 

 grammes, and corresponded thermally to 1 1 4 grammes of the solutions formed. 

 The thermal equivalent of the reservoir of the thermometer and of the stirrer 

 was 9 grammes. The alkaline solution weighed 160 grammes, and contained 

 the equivalent of 1738 grammes of S0 3 . The acid solution weighed 42*5 

 grammes. Hence the entire thermal value of the apparatus, in terms of the 

 solution, formed, was — 



Solution, . . . . . . 202-5 



Glass vessel, . . . . . 11 4 



Thermometer and stirrer, . . . . 0'9 



214 - 8 grammes. 



A correction (additive) of ^y was made to the direct readings for the 

 mercury in the stem of thermometer. The results are given to thousandths of 

 a degree, but this apparent minuteness is due to the reduction of the indica- 

 tions of the arbitrary scale to degrees. 



In the following detailed statement of the experimental results, Inc. is the 

 increment of temperature observed, corrected for the mercury in stem, and 8 is 

 the correction for cooling. 



Potash and Sulphuric Acid. 



Inc. 3°-358 3°-356 3°366 



6 -010 -024 -021 



Inc 



3°368 



3°380 3°-387 



Mean increment 



corrected, 3°-378 



Potash and Nitric Acid. 



2°-971 



2°-976 2°-977 



■018 



■019 -017 



2°-989 



2°-995 2°-994 



Mean increment corrected, 2° # 993 



Potash and Hydrochloric Acid. 



Inc. 3°-004 3°-002 3°-005 



8 -017 -019 -017 



Inc 



3°021 3°-021 



3°022 



lean increment corrected, 3° 



•021 



Potash and Oxalic Acid. 





3°'036 3°-048 



3°'040 



■017 -017 



■016 



3°053 3°-065 



3°-056 



\Iean increment corrected, 3' 



'•058 



VOL. XXVI. PART I. 2 A 



