THE BEE-KEEPERS' REVIEW 



283 



mometers giving high readings con- 

 tinued to show in general a higher 

 and higher average temperature 

 and to become more irregular (ex- 

 cept from February 15 to March 1), 

 the periods of increased heat be- 

 coming more frequent. There was 

 absolutely no regularity in these 

 intervals. After February 1 the 

 temperature of the cluster varied 

 between 7 5° and 91° F., the aver- 

 age from February 1 being 85.4° 



F. 



,vhich cooled the room was then 

 shut off and the temperature of 

 the room rose very slowly and reg- 

 ularly, until on March 11 at 8:45 

 a. m. it was 6 4° F. For the first 

 day the temperature of the cluster 

 was slightly variable, and at 10:45 

 p. m. thermometer 6, which had 

 been cooler than thermometer 2, 

 showed a rise in temperature 

 (probably due to a shifting of the 

 cluster), and from then on to the 

 24th they were nearly of the same 



I 



I 



FIG. 2. — Average daily temperatures of the center of the cluster of bees 

 in colonies 1 and 3 and roonr temperatures, Oct. 14, 1912. to Mar. 6, 19l:i. Tak- 

 en fi-om readings made hourly from 9 a. m. to 4 p.m. The room temperatures 

 are indicated by the heavy line. 



On March 6 all colonies in the 

 constant-temperature room ex- 

 cept two were removed. The colony 

 described above (No. 1) and one 

 other (No. 12), not to be described 

 at present, were left. On March 7 

 at 9 a. m. the temperature of the 

 room stood at 4 2° F., and the tem- 

 perature of the interior of the clus- 

 ter was about 84° F. The brine 



temperature at all times. On March 

 8, at 3 a. m thermometer 2 rose 

 to 87° F. (room temperature, 48.5° 

 F. having previously shown a cool- 

 ing. The cluster temperature then 

 showing relative- 

 until at 4:15 p.m., 

 at 77.3° F. (room 

 F. ) As the room 

 on page 312) 



dropped slightly, 

 ly little variation 

 March 9, it stood 

 temperature 5 5.7 

 (Continued 



