418 



knoblauch on radiant heat. 

 Table XLV. 



I. 



Compare 

 p. 390 and 391. 



Sources of heat. 



Argand lamp 



Red-hot platinum 



Flame of alcohol 



Metallic cylinder at a dark red heat 



Deflection by 



23-37 



1400 

 2000 

 21-87 



18-50 



1012 

 14-25 

 14-37 



Table XLVI. 



II. 



Com])are 

 p. 392 and 393, 



Sources of heat. 



Argand lamp 



Red-hot platinum 



Flame of alcohol 



Metallic cylinder at a dark red heat 



19 00 



10-37 

 14-50 

 1600 



Deflection by 



White 

 satin. 



31-00 



14-25 

 19-87 

 27-25 



Black 



satin. 



27-50 



13-25 

 17-37 

 23-50 



■White 

 taffeta. 



27-50 



13-00 

 16-24 

 22-00 



27-00 



11-37 

 15-25 

 19-75 



Table XLVII. 



III. 



Compare 

 p. 394 and 395. 



Sources of heat. 



Argand lamp 



Red-hot platinum 



Flame of alcohol , 



Metallic cvlinder at a dark red heat 



Deflection by 



■White 

 paper. 



Blue 

 paper. 



21-25 



* 



11-75 

 14-50 

 24-25 



19-13 

 11-13 

 13 63 

 22-25 



Black 

 paper. 



18-00 



* 



12-87 



* 



18-12 



* 



34-50 



Red 



woollen 

 tapestry. 



20-50 



8-12 



1025 



11-25 



Green 

 woollen 

 tapestry. 



1950 



7-87 



10-62 



12-12 



Table XLVIII. 



IV. 



Compare 

 p. 394 and 395. 



Sources of heat. 



Deflection by 



Gypsum. 



White 

 lead. 



Peroxide 



of tin. 



UTiitc 

 oil-j)aint. 



Argand lamp 



Rad-hot platinum , 



Flame of alcohol 



Metallic cvlinder at a dark red heat 



25-50 

 1212 

 14-50 

 2925 



26-50 

 13-00 

 15-75 

 30-75 



24-25 



* 



12-87 



* 



17-50 



* 



39-50 



24-50 

 11-25 

 14-00 

 27-87 



