387 



TO) from a »u«rsi>cal *fvi>yv» o/ tS« poo<«d resullJ oi 

 the cjlibraioo groupt rt was coodud«d iKat the 

 r«suhs of Eipenm«ni 81 couM vaiklly b« compared 

 with tSoiC of SO. In order to compote rvimof»fe*^< 

 ratio* for the corxJeniite* produced at diHefew 

 puff voJumes ii was necessary to assurT>e that (he 

 dote respoote reUt<>/»hip w\ tiperiment B1 wat 

 paraM lo that of Expenrr^ent BO. 



11) On the b*ws of the staiHtkal aruhrw) for ail 



tumoort »nd for matigrvani turrtours it it shown that 

 the tumorTfentcrty of co<vie*naie produced tt a poff 

 votumc of 10 mi it htgher than that produced at 

 25 ml. JS mi »nd SO mi. There s no ugnificani 

 dtffefeoce between the retofts obtair^ed at 25 mi 

 and 3S ml. Cor^mate produced at 2S mi puff voiumc 

 ■ more tumo<it«^< ('" tumours) than that at SO mi. 

 while tfot at 35 ml ii more %jinon%trMc than thai « 

 SO ml, if oniy malif runt tumoun arc cortttdcrcd 



U) H b concluded from the tutaticaJ analyvt thai 

 there ii a h^ Kty s<f ruficarvt puff volume effect and 

 that tKb effect ii linear with respect to the lo(>- 

 rkhmt of the puff voiumet over the range of puff 

 volumct used. 



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