ammo- 

 nium . 

 Eromide 

 ofdicthyl- 

 ammo- 



i TT I ammonium. tt i 



nmm. '^ II J I, Hj J 



312 Camhridge Philosophical Society : — 



Bromide f C^^h] [ (C4H,)" 



of ethyl- T^jJ II ( p,,. Bibromide of cthy- j^ I IL \^ ^^ 

 leuc-diamm.onium. - 1 H, ( -' 



I K J 



Bibromide of dl- f ^p-" ll^^'l, ] 

 ethylcae-di- N„< ^^'-i^^^> vBro. 



i< r' 



Bromideof fC,!!,^ Bibromide of f((^4'^^^"^ 



ammo- 1 C, IL ( • . - | (C. H,)" f ^• 



-i rr ammomum. ^ ^tt 



mum. (^ II^J L 11 J 



Bromideof pC.IO B.bromide of fCCJT.yn 



tetrcthyl- ^^ I C, H l^^, tetrethylcue-di- N.,<^ ^^^,H ( j3,.^_ 

 ammo- ]^Jhf ammonium. j ^^JW ( ' 



mum. L<^4^1.5J 1(^41^4) J 



The conception of dianimonium-compounds has suggested to me 



the idea to extend my observations also to the triacid-alcohols, and 



to submit ammonia to the action of the bodies 



an Br^, C,H3Br3, CfiHsBrg. 



Analogy suggested the formation in tliis reaction of a series of 



triammonium-basesj the salt of which might be thus formulated : — 



rii'"^, rR"n C^'"'] rR"n 



.Br3. N3^S |>Br3. N3^ Jj„, yBr3. N3^ }j,„ yBr3. 



IH3J. .. LhJ U'"J 



I have not yet succeeded in realizing these compounds by treating 

 wider several conditions ammonia by the above chlorides and bro- 

 mides of triacid-alcohols. The processes Avhich I have as yet tried 

 have led to other transformations. A different result is, however, 

 obtained bj' replacing the ammonia in these processes by amidogen- 

 bases. In this reaction, and especiall}' with aniline and chloroform, 

 a series of bcautifidly crystallized alkaloids is formed, the study of 

 which engages at present my attention. 



In conclusion, I ma_y remark that several of the known basic com- 

 jiounds appear to belong to the triammonium-type. 



The cyanethine of Kolbe and Frankland m.ay be viewed as such a 

 compound, — r(C.IIr)"'l 



c,3ii,,N3=](c^i:;)"' N3. 



This substance apjiears to me to be derived from 3 equivs. of am- 

 monia, in which 3 equivs. of hydrogen are replaced by 3 equivs. of 

 the tri-atomic radical which chemists assume in glycerine-alcohol. 



CAMBRIDGE PHILOSOPHICAL SOCIETY. 

 [Continued from p. 233.] 

 Feb. 8, 1858. — A paper was read by the Rev. O. Fisher, "On 

 the probable origin of numerous Deep Pits on some Heaths in 

 Dorsetshire." 



