306 EXPERIMENTS SHOWING 
Series peli Blue | Green |Orange] Plain | Red | White|Yellow 
Ist wate ae 11 26 39 51 65 55 35 a7 
2nd, May 30 ... 15 38 57 59 72 | 66 58 70 
ard, duly 2 wa. 16 44 76 82 13 53 | °53 67 
Athy ye sue 15 43 61 64 80 66 50 56 
Sth, 45 Bi wee 10 36 47 39 40 40 36 42 
Gth, o¢  G se 2 2 8 9 10 14 6 7 
7th, , 20... 11 33 39 50 47 49 Al 49 
StH, 45 2S asx 10 31 46 48 52 37 35 31 
9th, ,, 25... 10 22 54 38 52 |. 33 35 46 
100 | 275 | 427 | 440 | 491 | 413 | 349 | 405 
The precautions taken seem to me to have placed 
the colours on an equal footing ; while the number of 
experiments appears sufficient to give a fair average. 
It will be observed also that the different series agree 
well among themselves. The difference between the 
numbers is certainly striking. Adding together 1, 2, 
3, 4, 5, 6, and 7, we get 28 as the total number given 
by each journey; 100 journeys therefore give, as the 
table shows, a total of 2,800, which divided by 7 would 
of course, if no preference were shown, give 400 for 
each colour. The numbers given, however, are—for 
the blue only 275, for the white 349, yellow 405, red 
413, green 427, orange 440, and plain glass as many as 
491. 
Another mode of testing the result is to take the 
per-centage in which the bees went respectively to each 
colour first, second, third, and so on. It will be 
observed, for instance, that out of a hundred rounds 
the bees took blue as one of the first three in 74 cases, 
