1866.] 



derived from Coal-tar. 



133 



(1) C,., boiling-point 21 0° C. 



(«) 0*262 substance gave 0'840 carbonic acid and 0-290 water. 

 {b) 0-1978 substance gave 0-635 carbonic acid and 0*2195 water. 



Calculated. Found. 



^ A ^ 



C,, 144 87-8 87-44 87-55 



.... 20 12*2 12-30 12-32 



Tei 100-0 99-74 99*87 



Globe with air 5*547 



Temperature of air 17° C. 



Globe with vapour 5*730 



Temperature on sealing . . 250° C. 



Capacity of globe 65*0 cubic centims. 



Calculated. Found. 

 6-68 6*98 

 The residue in the globe had a brown colour, the oil not being completely 

 volatile ; this accounts for the difference between the calculated and found 

 vapour-densities. 



(2) C,,H,„ boiling-point 240°. 



0*107 substance gave 0*343 carbonic acid and 0*1195 water. 



Calculated. Found. 



C,, 168 87*5 87*42 



24 12*5 12-40 



"192 100*0 99*82 

 {a) Weight of globe 3*354 



Temperature of air 10°*5 C. 



Globe with vapour 3*5745 



Temperature on sealing . . 280° C. 



Capacity of globe 67*6 cub. centims. 



(5) Weight of globe 3*286 



Temperature of air 7° C. 



Globe with vapour 3*4665 



Temperature on sealing . . 270° C. 



Capacity of globe 55*2 cub. centims. 



Found. 



Calculated. a. b. 



6*65 7*06 7*02 



The liquid remaining in the globe had also in both cases a brown colour. 



(3) C,eH,3, boiling-point 280° C. 



0*152 substance gave 0*4885 carbonic acid and 0*174 water. 



Calculated. Found. 



Cjo 192 87-27 87-11 



J[273^ 12*72 



220 100*00 99*83 



N 2 



