COLD HARDINESS 



225 



Table VIII. Freezable Water and Fat in Caterpillars of the 

 Brown-tail Moth, Euproctis chrysorrhcea L. (From Sacharov, 

 1930.) 



Note. In series A the caterpillars withstood a temperature of 

 while in series B 82 per cent, succumbed at — 7-8°. 



17-35' 



Table IX. Freezable Water and Fat in Various Insects. 

 (From Sacharov, 1930.) 



Temp. 

 ° C. 



- 5-75 



5-75 

 111 

 17-35 



11-1 

 17-35 



2-9 

 5-75 

 111 



Water 

 Per cent. 



79-16 



48-65 

 48-65 

 48-65 



54-12 

 5412 



74-05 

 74 05 

 74-05 



Dry 

 Substance. 

 Per cent. 



Non- 

 frozen 

 Water. 



Larvae of Melolontha hippocastani L. 

 20-84 I 59-13 I 74-27 I 25-73 



Adults of Scoliopteryx libatrix L. 



51-35 

 51-35 

 51-35 



13-97 

 25-94 



28-91 

 53-39 



100 

 71-19 

 46-61 



Larvae of Plagionotus arcuatus L. 



45-88 — — 100 



45-88 1-80 3-53 96-47 



Adults of honey bee, Apis mellifera L. 



96-52 

 36-03 



25-95 

 25 95 

 25-95 



2-58 

 27-36 

 54-72 



3-48 

 26-97 

 73-92 



2608 



Fat. 



Ratio 

 to Live 

 Weight. 



607 



1818 

 18-18 

 1818 



14-36 



2-66 

 2-66 

 2-66 



Ratio 

 to Dry 

 Weight. 



29-80 



56-31 

 56-31 

 56-31 



30-05 



10-26 

 1026 

 10-26 



ll.A. ENTOMOLOGY. 



I 



