Prof. T. Carnelley on the Periodic Laic. 17 



Table IX. 



Throughout this table the positions assigned to the elements 

 for the purpose of calculation are those given in Table I. 



Substance. 



Experimental data only 

 used. 



Experimental and calcu- 

 lated data used. 



Melting- 

 point. 



Boiling- 

 point. 



Melting- 

 point. 



Boiling- 

 point. 



CsCl 



b.959 



b.940 



b.923 



774-790 



891-901 





b.959 



b.940 



b.923 

 774-790 

 891-901 

 (1280-1351) 1 

 904-962 

 820-870 

 802-820 

 766-777 

 205-215 

 260-282 

 393-401 

 215-246 

 (418-423) 4 

 199-200 

 240-248 

 317-328 

 198-200 

 232-243 

 298-322 

 180-199 

 199-237 

 237-291 

 334-346 

 198-211 

 198-201 

 (251-254/ 



465-521 

 616-623 



CsBr 





Csl 





CuBr.. 



Mel, .. 





BaCLJ ... 





Bal 2 



656-962 

 820-870 

 719-820 

 423-719 



b. 290 



260-363 



393-719 



(253-276) 2 



(389-398) 3 



b.245 

 237-258 

 317-328 

 198-248 



b.258 

 298-328 



b.243 



b.364 





BeCl, 





BeBr" 



Bel, 







BC1" 





BBr 3 





BL 



a. 563 



CCL 



CI, 



616-623 



NCL 



NBr 3 



434-444 

 577-593 



434-444 

 577-593 



NI 3 



OCl 2 



OBi- 



344-363 

 373-563 



b. 253 

 253-363 



a. 253 



344-348 

 439-492 

 189-240 

 253-286 

 346-373 



OI 2 



FC1 



FBr 



FI 



AICI3 



334-346 



(198-230) 5 

 198-228 

 251-254 



SiCl 4 „. 







PCl 3 







PBr 3 .... 







PI q 



537-677 



(563-588)7 



383-430 

 493-563 



331-336 1 



407-408 \ 9 

 518-537 J 



SC1 2 



198-243 



229-258 



(298-328) 8 



224-235 



198-200 

 229-252 

 314-316 



SBr, 



351-373 

 470-563 



SI." 



OlBr 



ScCl 3 





f 232-241 

 \ 293-293 

 [ 399^08 



ScBr 3 



1 ::::::::: 





Scl 3 



j .::.:.::; 









1 



1 Melts above 1150° ; but how much above is not known. 



2 Possibly below 248°, as the limit 253° depends on the melting-point of CBr 4 , 

 which is exceptionally bigh. 



3 Very uncertain, perhaps better take above 389°. 



4 Omitting all the limits depending on the melting-point of CBr 4 . 



5 Does not solidify at 253°. 



6 These limits may be too high ; some of the data seem to indicate that it is 

 near 205°. 



7 Somewhat uncertain. 8 Does not solidify at 333°. 



9 If Mendeljeff's prediction {loc. cit.) be correct, that Scandium chloride 

 (Ekaboron chloride) will boil above A1C1 3 and be solid at the ordinary tempera- 

 ture, then these values will be too low. They are all based on the values for the 

 halogen compounds of Boron. 



Phil. Mag. S. 5. Vol. 18. No. 110. July 1884. C 



