208 



On the spontaneous heating of Brine. 



[March, 



of filling and in ten minutes or a quarter of an hour, when these disap- 

 peared, the machine was quickly drawn up and the temperature of the 

 water in the buckets was tried rapidly in succession with a small ther- 

 mometer, leaving the specific gravity to be tried afterwards. 



On the day of the first trial of this probe I was favored with the 

 company and assistance of Dr. Huffnagle, who took a lively interest 

 in the experiment. The following particulars are the results of all the 

 trials I have yet made with it, the buckets being numbered from the 

 bottom of the machine, 



First Experiment, 5th November, 9 A.M. 

 Open long reservoir at Balya Ghat, 

 Probe immersed at an angle of 45 or 50°. 

 No. Temp- 



only | full. 



1 



106 



2 



120 



3 



120^ 



4 



113 



5 



99 



6 



80 



7 



78£ 



8 



78 



9 



78 



1077 at 



T. 



117 



1073.5 



>» 



1J6| 



1071 



»> 



110 



1049 





97 



1022 



j > 



80 



1022 



n 



78 



1021 



it 



78 



1023.5 



» j 



78 



Second Experiment, 5th November, 2 P. M. 



at Narainpore. 

 Open round brine reservoir. Probe at 



angle about 60° southwest side. 

 No. Temp. 



1 105 



(appt.) S. G. 



1163 atT. 



100 



2 104 



not full. 









3 106 



(appt.) 



S.G. 



1140 



ii 



104 



4 113 



it 



,, 



1160 



,, 



108 



5 U7 



>> 



it 



1161 



17 



113 



6 123 



>> 



»> 



1157 



Ii 



117 



7 130 



M 



»> 



1159 



,, 



123 



8 132 



11 



> » 



1153.5 



t • 



124 



9 137 



>» 



ii 



1145 



1 1 



130 



10 131 



>» 



>> 



1121 



8> 



125 



11 127 



11 



iy 



1100 



11 



120 



12 122 



tt 



t> 



1090 



1 1 



114 



13 114 



11 



11 



1075 



>» 



109 



14 104 



,, 



11 



1065 



>> 



101 



15 100 



>> 



11 



1065 



It 



97 



16 85 



11 



11 



1040 



11 



84 



17 84 



11 



1 1 



1044.3 





83 



18 82 



It 



„ *i 



ot full. 







19 82 



»» 





1038 



}» 



81 



Third Experiment, 5th November 



9i 



P. M. 



Same place and 



reservoir east side at 



gate. 



Probe at angle 



: about 7 



5\ 





No. Temp 













1 102 



(appt.) 



S. G. 



1149 atT. 



J 00 



2 106 





,, 



1145.3 



ii 



103 



3 109 



',', not ft 









4 114 



„ s 



. G. 



J175 



ft 



111 



5 119 





ii 



1165.5 



ji 



116 



6 128 





11 



1159 



ii 



124 



7 137 







1155 





130 



8 133 





11 



1139 



ii 



128 



9 135 





11 



11?5 



„ 



127 



10 127 





11 



1097 



ii 



120 



11 114 





11 



1075 





109 



12 105 





11 



1068 



,, 



101 



13 92 





,, 



1050 



n 



90 



14 86 





,, 



1010 



1 1 



84 



15 82| 





11 



1038 



»> 



61 



16 81 i 





»1 



1037§ 



n 



61 



Fourth Experiment, \9th November, 2 p.m. 



at Narainpore. 

 Open round brine reservoir southwest 



side. Probe at angle 60°. 

 No. Temp. 



1 104 (appt.) S. G. 1150 atT. 102 



2 ]08 „ not full. 



3 108| „ S.G. 1150 ,, 106 



4 114 „ „ 114S ,, 112 



5 125 „ ,, 1166 ,, 120 



6 132 ,, „ 1151 ,, 124 



7 136 „ ,, 1142 „ 127 



8 133 ,, „ 1126 „ 128 



9 127 „ „ 1095 ,, 120 



10 124 „ ,, 1070 ,, 110 



11 U7 ,, „ 1061 ,, 104 



12 99 ,, „ 1057 „ 96 



13 90 „ „ 1047 ,, 90 



14 83 ,, ,, 1046 ,, 83 



15 81§ ,, ,, 1045.6 „ 83 



16 81 „ ,, 1045 ,, 83 



17 82 ,, „ 1045 ,, 83 

 Fifth Experiment, same date and place. 



Covered reservoir. Probe at angle 

 about 70°. 

 No, Temp. 



1 88 (appt.) S. G. 1147 



2 88 ,, ,, 1124.5 



3 90 „ „ llo7 



4 91 ,, ,, 1107 



5 90 ,, „ 1102.6 



6 90 „ „ 1094 



7 89 „ „ 1081 



8 88 ,, „ 1078 



9 87§ ,, ,, 1069 



10 — empty. 



11 82 ,, ,, 1054 



12 80 1 



13 77/ 



not full. 



14 76 1046 



15 76 1046 



Sixth Experiment, same date and place. 

 Large reservoir. Probe at angle 

 about 80°. Tried at 2§ p. m. 



No. Temp. 



1 93£ (appt.) S. G. 1070 



2 93^ ,, „ 1070 



3 93 ,, ,, 1069 



4 92 ,, ,, 1067 



5 91§ „ „ 1064 



6 90 ., ,, 1064.5 



7 87 „ ,, 1057 



8 35 „ ,, 1056 



9 84 „ „ 1050 



10 84 „ „ 1050.5 



11 84 (not full). 



12 84 ,, „ 1050 



