Economy of Fuel. 



333 





100°F. 



102 



102 



105 



107 



109 



110 



110 



115 



117 



119 

 120 

 120 



121 



124 

 125 

 128 

 134 

 134 



135 



140 

 142 

 142 

 144 

 146 

 146 

 147 

 148 

 151 

 152 

 152 



152 



152 J 



^ s 



o '-' 

 O 



65°' 



66 



641 



60 



60 



60 



66 



59^ 



57| 



56 



58 

 58 

 58 



60 



58^ 

 68 

 61 

 61 



58§ 



59 



59 



63 



58 



62 



59i 



56| 



60 



62J 



59^ 



72 



65 



64 



62^ 



B-s 





35 

 36 



37^ 



45 



47 



49 



44 



50J 



57i 



61 



61 



62 

 62 



61 



65§ 



57 

 67 

 73 

 75J 



76 



1 



79 



84 



82 



86f 



89i 



87 



85J 



9l| 



80 



87 



H 



84 

 85 

 85 

 85 

 88 

 90 

 92 

 88 

 92 



90 



91 



95 

 94 

 96 



92 



98 

 101 

 100 

 102 

 102 



102 



106 

 111 

 110 

 113 

 110 

 110 

 113 

 116 

 114 

 123 

 120 



120 



119^ 



16 

 17 

 17 



20 

 19 

 19 



18 

 22 

 23 



26 



24 

 26 

 24 



29 



26 



24 

 28 

 32 

 32 



33 



34 

 31 

 32 

 30 

 36 

 36 

 34 

 32 

 37 

 29 

 32 



32 



33 





.426 



.393 

 .420 



.387 



.495 



.396 

 .470 



.418 

 .438 

 .424 



.434 



.420 

 .392 

 .381 

 .362 

 .405 

 .402 

 .390 

 .374 

 .403 

 .362 

 .367 



.364 



.366 



^ ^ s 



.446 



.412 



.428 



Remarks on the variations in the 

 temperature of tlie entering gas, at 

 tlie moment of tlie corresisonJiu, 

 observations. 



Rising rapidly. 



.437 



.392 



.386 



Beginning to rise. 



Rising after closing the 

 stove doors in the morn. 



Falling 1° in 10'. 



Rising 4i° in 10'. 



Falling 1° in 10'. 



Fire very low — covered 

 up for the night. 



Rising 4° in 5'. 



Rising rapidly. 



Rising 8° in 5'. 



Rising rapidly. 

 ( Rising rapidly — tempe- 

 ( rature 8° in the open ajr 



Rising 6° in 5'. 



Nearly stationary. 



Falling 4° in 5'. 

 Rising 5^° in 5'. 

 Rising gradually. 

 Stationary. 

 Falling 4^° in 5'. 

 Rising 6° in 5'. 



Falling-fire recently re- 

 newed. 

 Falling 7^o in 5'. 



