56 REPORT ON THE FIG MOTH IN SMYRNA. 
the cost can be reduced. This estimate is based upon figures fur- 
nished by a packer who uses the process. 
In the first experiment the exposure of the figs in the boiling water 
was very much undertimed. A number of figs infested with larvee, 
selected from a pile of refuse and “hordas”@ in a “khan,” was im- 
mersed in boiling salt water (2.5 per cent solution, containing also 
some glucose) at 100° C, (212° F.) for short periods at varying tem- 
peratures, then put into jars and watched to determine what would 
later breed from them. The following table gives the temperattres 
and lengths of exposure and the number of larvee that emerged at 
intervals of a week or more: 
Temperature, lengths of exposure, and number of larva that emerged from 
scalded figs at intervals of a weck or more, 
Number of larvee present. 
Tempera- | youre.) Number ms ———— |) hericent 
ture. of figs. Sept. | Sept. | Sept. | Sept. | Oct. | Oct. killed, 
15. 20. 26. 30, 8. 28. 
at 0 Seconds. 
100 10 LOT seein | eee | 2 3 4 60 
90 10 11 2 3 7 10 11 13 0 
80 10 11 1 2 2 7 4 7 0 
70 10 Tn Prete are 3 5 6 if 7 0 
100 5 9 2 5 12 17 19 19 0 
100 1 9 1 | 3 7 8 10 0 
Check. | Check. shee Ase 2 3 5 6 9 0 
Since the number of larve present in the figs before boiling was 
plainly variable, the only conclusion reached by this experiment is 
that an exposure of 10 seconds in water at 100° C, (212° F.), while 
it may reduce the number of larvee in the figs somewhat, is quite 
insuflicient to kill all of them, and that exposures for shorter periods 
rat lower temperatures than that are practically useless. 
In another experiment figs similarly infested with larvee were im- 
mersed in water containing 24 pe cent of salt and a small amount of 
glucose, boiling at 100° C. (212° FB.) for 20, 25, and 380 second periods. 
But these exposures, likewise, proved insufficient. Those scalded for 
20 and 25 seconds, when broken open after the immersion, were found 
still to contain living larvee. In the figs boiled 80 seconds that were 
broken open immediately the larvee were apparently all dead. 
“Wigs which have failed {o mature on the trees, and which pnanntnnily: oontaine no sugar, 
being dry, hard, and flavorless. 
