Prof. Magnus on the Allotropic Conditions of Sulphur. 529 



Soft Sulphur lextracted with Bisulphide ,jpf,Cai^bpn, immpdJAt^lv 



ad^uini Juo.t)xi!b. o^cooli^G- .-ibsdiitoo Joo3o) b3f/oik 



fiodiiii) 

 «idT 



-ISO lo 



Qili mo 



GHimmes. 



i -^ 71 



sbiiiqliSS'- 

 rter 



'Gaye 



Insoluble sixlphur. 



33-82 per cent. 

 38-49 ... 

 42-00 ... 

 3604 ... 

 46-07 ... 



Crummy sulphur. 



5-32 per cent, 



2-48 ... i^'^ 



507 

 3-57 

 3-91 

 2-79 





Uidqlua 

 anicJiio'i 



/ *IJjdqIj78 



k.di iv7)ol4 



The same Sulphtif pei*fectly hardfeii^d 



1^8-tiin "^^ 1 11 ill u I-; 



Grammes* 



^.,. After days. 



Insoluble sulphur. 



Gave 

 \- 



Crummy sulphur. 



7\ , 



;liL> 





4 



■ ■ 7 " 



4 



36-36 per cent. 

 3700 ... 

 3607 ... 

 39-70 ... 



0-84 per cent. 



1-57 '4x)^^i 



0-64 



0-77 



0-69 



!!'byi 



.'^! 



Whether in the change of the soft sulphur into the hard 

 the crummy sulphur contained in it is changed into insoluble 

 or soluble sulphur, I must for the present leave undecided. It 

 might indeed be believed that this could be settled by comparing 

 the quantity of insoluble sulphur contained in the soft, with the 

 quantity of the same present after it has become hard. But, as 

 is seen from the present experiments, such determinations cannot 

 be executed with sufficient accuracy; partly because the inso- 

 luble sulphur from its porous condition easily retains some bisul- 

 phide of carbon ; but chiefly because we cannot be certain, in 

 spite of all precaution, that the hardened sulphur under inves- 

 tigation reaches the water at exactly the same temperature, and 

 is cooled under exactly the same circumstances, — is thus in the 

 same state as the soft sulphur corresponding to it. 



The quantity of crummy sulphur cannot indeed be determined 

 with perfect certainty, but still with sufficient nearness to show 

 that it is present in the soft sulphur in considerably greater 

 quantity than in the hard. On this account I think I may 

 assume, that the flexibility and elasticity of soft sulphur arise 

 from the presence of this modification. 



This supposition is rendered more probable by the fact, that 

 even very small quantities of other admixtures change the com- 



