VUI. D, 1 



Jones: The Cigarette Beetle 



27 



convenient. Cigars packed in this way should be subjected to 

 cold for a period of at least six days. Large packages should 

 be avoided as it takes longest for the cold to affect them. 



MISCELLANEOUS EXPERIMENTS 



A check, in which samples taken from different lots of treated 

 tobacco were made into cigars and subjected to factory condi- 

 tions, was carried on simultaneously with the foregoing experi- 

 ments. The results have been indicated in Table XVIII. 



Table XVIII. — Results of experiments with treated stock where cigars 

 were subjected to general factory conditions,' 





Nximber 



of 

 cigars. 



Date 

 made. 



Treatment. 



Date examined. 



Kind of cigar. 



Method. 



Length. 



VegTieros finos 



Conchas especiales .. 



Do 



Pereire .._ 



VegTieros finos 



Conchas especiales .. 



Perfectoe i 



60 



50 

 50 

 50 

 50 

 50 



50 



200 



50 



July 1 



...do .... 



do 



Steam. 



Hrs. mins. 

 20 

 20 

 25 

 25 

 48 00 

 48 00 



30 00 



48 00 



)Augu8t 27 and 

 1 November 10. 



[ Do. 

 1 Do. 



Do. 



Do. 



October 12 and 

 December 10. 



do 



do 



do 



do 



-..do..._ 

 ...do-.- 



...do.... 



June 1 



Sept. 7 



do 



30 grams CS2 per cu. 

 meter. 



32 grams KCN per cu. 

 meter. 



38 grams CS2 per cu. 

 meter. 



Cigars untreated; gen- 

 eral factory run. 



High life 









• All of these cigars were made, dried, boxed, and kept in the factories with general stock. 

 They became infested before the first examination. At the subsequent examination, only a few 

 cigars were uninfested. 



From the above it is plain that, although the tobacco was 

 treated and all stages of the insect killed, as shown in Tables 

 IX, XII, and XV, the treated cigars became infested as did the 

 untreated. It is seen that infestation of manufactured tobacco 

 can and does occur in the drying cabinets (Plates V, figs. 1 and 2) 

 and selecting room, hence the importance of having these free 

 from all stages of the cigarette beetle. Infestation may also 

 occur after boxing, as many of the ordinary cigar boxes are 

 defective. These facts demonstrate that the cigars must be 

 kept under conditions which will prevent reinfestation. An open 

 mandala where beetles have free access for oviposition is shown 

 in Plate VI, fig. 1. The infestation of mandalas can be controlled 

 to a certain extent by the use of a modern fermenting compart- 

 ment (Plate VI, fig. 2). This can be so arranged as to prevent 



