338     Volatility  of  Some  of  the  Newer  Remedies.  {A: 
Meeting  Point. 
Temperature  and 
Length  of  Time 
of  Heating. 
Hxalgin, 
ioo°  C. 
Acetanilid, 
ii3°-ii4°  C. 
Methacetin, 
127°  C. 
Phenacetin, 
135°  C. 
L/acto- 
phenin, 
1160- 
117°  C.1 
48°-  55°  C.,  3  hrs. 
0*4930 
0-4980 
0-5000 
°'4995 
0*4990 
55°-  46°  C,  7  " 
0-4825 
g'4995 
0-5010 
0*5005 
0-5005 
480-  46°  C,  10  " 
°'4735 
0-4985 
0*5010 
0-5000 
°"4995 
620-  68°  C,  7  " 
0*4235 
0*4965 
0.5000 
0-5000 
o'4995 
66°-  85°  C,  5  " 
0-2830 
0-4890 
0*5000 
0-5000 
0*5005 
8o°-  85°  C,  4  " 
0-1890 
o'4795 
°'4995 
0  -4990 
0*5000 
90°  C.,  4  " 
discontinued 
0-4685 
0*4980 
0-4980 
0-4990 
85°  C,  2  " 
0-4635 
0-4985 
0*4985 
o*4995 
900-  92°  C,  3  " 
0-4490 
0-4970 
0*4960 
0*4985 
95°-  97°  C.,  5  " 
0-4315 
o*4955 
°'4955 
0*4990 
850-  90°  C,  2  " 
0-4275 
0.4955 
o'4955 
0*4990 
98°-ioo°  C,  4  " 
discontinued 
0*4930 
°'4935 
0*4985 
98°-ioo°  C,  6  " 
0-4915 
0-4930 
0*4980 
qS°_too0  On" 
0-4885 
O'AQIO 
0-4985 
98°-ioo°  C,  5  " 
0-4870 
0-4895 
0*4975 
98°-ioo°  C,  6  " 
— 
— 
0-4850 
98°-ioo°C.,  5  " 
discontinued 
0-4880 
98°-ioo°  C,  7  " 
discontinued 
o-497o 
98°-ioo°C.,  6  " 
0*4960 
1  No  record  of  the  melting  point  was  found  ;  the  above  determination  was  made  without 
corrections. 
The  importance  of  these  observations  is  chiefly  in  connection 
with  the  solubilities  and  quantitative  estimations  of  these  substances. 
The  favored,  because  expeditious,  method  of  ascertaining  the  solu- 
bility of  a  substance  is  to  make  a  saturated  solution  at  the  proper 
temperature  and  evaporate  a  weighed  portion  of  the  solution  to  dry- 
ness on  a  water-bath  and  complete  the  drying  at  a  temperature  of 
