532 



TJAniATIOX lUOT.OGV 



TaBLK 14-1. I'XI'KRIMENTS DkTEKMININO TIIK OaHCI \n(iK\ IC WaVK I.KNT.TIIS 



(From IMum, 1048.) 



■• The emission of such lamps is similar to that illustrated in Fig. 13-3. Other papers demonstrating 

 carcinogenesis by such arcs are not included since they provide no further evidence regarding wave- 

 length dependence. 



>> Based on the present author's estimate. The characteristics of the source as well as the transmis- 

 sion of the filter have been considered in making these estimates. 



<= " Verre transparent," which is assumed to be ordinary window glass, prevented carcinogenesis as did 

 also several colored glasses which should have longer wave length cutoffs. 



«' Based on the original author's statement. The characteristics of the so\irce as well as the transmis-* 

 sion of the filter have been considered in making these estimates. 



' Uni)ublished result. 



/ Nearly all the radiation emitted within the carcinogenic range is in the 2537 .\ line. 



"The dosage used was apparently iti:iilc(niate (compare with Blum and Lippincott. 1942). 



'' This is a combination of a tungsten filament and a mercury arc in special glass envelope. 



