382 EXPERIMENTS ON 
without counting these, from 3.20 to 8 o'clock, out of 
forty-five ants, twenty-nine went up the right pin, while 
sixteen went up the nine wrong ones. 
Thus on 
July 13, out of 27 ants, 19 went right and 8 wrong. 
» 15 5, 29 5, 17 ” 12 
29 16 29 30 23 16 od 14 ” 
br 18 9 26 9 23 be 3 ” 
> 19 ” 45 ” 29 ” 16 ” 
Or adding them all together, while there were never 
less than ten pins, out of 156 ants, 103 came up the 
right pin, and only 53 up the others. 
I was at first disposed to infer from these facts that 
the first, ant. must have described the route to its friends, 
but subsequent observations satisfied me that they 
might have found their way by scent. 
