li 
CONTENTS. 
OHAPTER VIII. 
THE SENSES OF ANTS. 
S1quT :—Difficulty of understanding how insects see—Numbor 
of eyes—Two theories—Views of Miiller, Gronacher, 
Lowne, Claparede—Appreciation of colour—Sensitiveness 
to violet-—Perception of ultra-violet rays. JIDARING :—An- 
tenn regarded by many entomologists as organs of hearing 
—Opinions as to whether ants, becs, and wasps: hear— 
General opinion that bees and wasps can hear—Huber and 
Forel doubt in the case of ants—Ixperiments with ants — 
Forel’s observations—Colonel Long—Mr. Tait—Struoture of 
anterior tibia. THm Smnsp or SMBIL . . . 
CHAPTER IX. 
GENERAL INTELLIGENCE 
Statements of previous writers—Economy of labour—Iixperi- 
ments as to ingenuity in overcoming obstacles and econo- 
mising labour—Experiments with bridges, embankments, 
and moats—Karthworks—Ingenuity in building nests— 
Difficulty in finding their way—Hxperiments with movable 
objects—Sense of direction—Ixperiments with rotating 
disks—Experiments with rotating table—Influence of light 
ONAPTER X, 
BEES. 
Difficulty experienced by bees in finding their way—Communi- 
cation between bees—Bees do not by any means always 
summon one another when they have discovered a store of 
food—Bees in strange hives—Infatuation of bees—Want of 
affection—Behaviour to queen—Sentinels—The sense of 
hearing—The sense of colour— Experiments with coloured 
papers—Powcer of distinguishing colours—Preference for 
blue—-Influence of bees on the colours of flowers—Blue 
flowers—Paucity of blue flowers—Blue flowers of compara- 
tively recent origin. i . . 
PAGn 
182 
236 
. 274 
