Prof. T. Carnelley on the Periodic Law. 



505 



first (monad) up to the fourth or middle (tetrad) member of 

 each series, and then diminish to the seventh (monad) or last 

 member (see Table II.*). 



This periodicity is not exactly the same as that in the case 

 of the corresponding compounds of the elements ; I shall not, 

 however, discuss this point at present, but defer it to my next 

 communication. 





Table II. — Illustrating Relations 1 and 2. 









Chlorides. 



Bromides. 



Iodides. 



M.P. 



B.P. 



M.P. 



B.P. 



M.P. 



B.P. 



- 



6*» ... 



248 



350 



364 



462 



420 



620 





(OH) 1 " 



203 



334 



281 



424 



392 







(CH 2 )« 



Liquid. 



315 



b.261 



370 



277 



453 





(0H 3 y 



Liquid. 



249 



Liquid. 



278 



Liquid. 



315 



6' 2 »"... 



460 V (?j 



466 V (?) 













(C,H)'" 



Liquid. 



360 



Liquid. 



435 









(W 



Liquid. 



411 



327 



488 









(C 2 H 3 )- 



Liquid. 



367 



Liquid. 



462 









(0 2 H 4 f 



Liquid. 



345 





393 



355 



453 d. 



p 



O 



(C 2 H 5 )i 



| Liquid. 



285 



Liquid. 



312 



Liquid. 



345 



(0 3 H1 

















o 



(<WU*. 



Liquid. 



35i 











O 



(0 3 H 3 ) iu 



Liquid. 



402 



Liquid. 



457 



326 





m 



(0 3 H 4 F 



434 



447 



405 



513 







o 



(0 3 H 5 )"' 



b.263 



415 



289 



476 







>3 



(C 3 H 6 )- 



Liquid. 



366 



Liquid. 



411 



Liquid. 



460 



w 



(C 3 H 7 )i 



Liquid. 



315 



Liquid. 



339 



Liquid. 



368 



(0 4 H 3 )i 

















(C..H,)" 

















W 

















(0 4 H 6 )« 



346 





383 











(C 4 H T F 









487 









(0 4 H 8 )" 



Liquid. 



386 



Liquid. 



431 









(C 4 H 9 )' 



Liquid. 



339 



Liquid. 



361 



Liquid. 



390 



(0 5 H 5 )> 



Liquid. 



566^?) 2 













(0 5 H 6 )» 



Liquid. 



419 













(0,H 7 )iii 



Liquid. 



473 













(C 6 HJ* 



Liquid. 



508 



388 



548 









(C 6 H 9 )- 



Liquid. 



454 



Solid. 











(C 5 H 10 )« 



1 Liquid. 



417 



Liquid. 



453 









(C & H n )i 



| Liquid. 



371 



Liquid. 



391 



Liquid. 



416 



* The periodicity is rendered still more evident by the curves for the 

 methides, chlorides, and bromides shown in the diagram (p. 514). 



