( 77« ) 



('oworkr'i-s. hy IMssnkh niid l>y Ai avkijs aiul ('zkrny aio directly 

 opposed In liis repr(Soiiiati(>ji>. 



Tn liis last tlieoi-etical paper. Stikglitz attributes the transforniation 

 of some more liydr(i\ylaniiii(>-(|pi-i\ates to the iiilennediai-y tbi'niation 

 of nioleciile-residiies w illi iiiii\aleiit iiitroueii ; lie iiieliides all these 

 under the uanic <>(' ■ r)F,(KM\N\-aiTaiiiionif'iil"'. 



T think. ï iia\o sjiown that ihi^ (dassification is not permissible. 

 If it wei'o s(i. ihi' lIoKM \N\-li-aii>f(»rniali()ii miiiht (daim pi'iority over 

 the "Bkckm \N\-ari'aiii:<'iiiPnT'". \vhi(di is of more receiil dale. 



In ftrdci- to ,i\(iid conriisioii I ihink it alt^(>jlltely necessary to let 

 ea(di of the said lra)isf()niia(if)ii> retain iis own name and to treat 

 them as separate reactions. In the ( 'i irrns-transformation CH3CON . N._, 

 — ^ (*ONC^H, -[- ^-i' ^''t' assumption of the intermediary occurrence of 

 a molecule residue CH3("().X is j)ernnssible : in the Hot .m \N.\-reaclion 

 (.'H,('ONHRr-»(!()N0H, + HB, such is possible l)ut not necessary, 

 lir . C— OK 



II mav also have been formed as an intermediate product 



NCH3 

 (HANTZsrn); fnially we may admit in the Keckmanx reari-angement. 



R . c . R' -^ R . C - X -» l^vCOH {= RCO . XHR' .) 



II II II 



NX XR' XR' 



a same meidianism as in the HoiiiAXX-transformation. but according 

 to my 0|)ini(»n. not the presence of a moleculeresidne with uni\alent 

 nitrogen. 



The physico-chemical iuAestigation of the Bi'.rKMAxx-rearrangement 

 is being continued. 



r>oBRv Di'', Bruyx. 

 Amsterdmii, Febi-iiary J 904. Üninii. ch^'m. hth. of fhr Univ. 



1) X = a, Br. OH or SU^H [respectively HoSOJ, OUOCH^. 



