PERSISTENT NUCLEI. 



59 



i -minute exposures of the former case; and these inferences are cor- 

 roborated by the last observation (part V) at the original low 

 8/ 20 cm. 



TABLE 36. Continuation of the preceding. Bulb at 6 cm. 



II. Decay. 



III. Decay. Larger dp. 



* Coronas distorted with much rain. Heavy fogs near bottom . Coronas more 

 blurred and foggy as the time after exposure increases. 



f Corona after 5 minutes' waiting, round; not stratified, but blurred. 

 \ Bulb too weak for strata. lonization density below entrance valve. 



