IZ2 PROCEEDINGS COTTESWOLD CLUB 1903 
round and round in much the same way as a man may 
when lost in a mistona moor. But it frequently happens 
that a worm, after executing one or two, or perhaps as 
many as half-a-dozen circles, suddenly turns at right angles 
(nearly always ow¢ward/y) and goes off in a straight course. 
Also, a worm will sometimes come into the roadway and 
travel along it to some distance, but making one or more 
“dips” in his track, towards the gutter, and then going on 
farther still, as though with a definite purpose. All this 
is shown in the tracks visible at early morning. The 
longest of such tracks I have measured was 26 yards in 
length. 
The male Stickleback (Gasterosteus leturus) shows 
great intelligence in selecting materials for his nest, and in 
building it; also in fighting, in which he is a master of 
the artifice of the feint, as I have observed very closely 
when keeping these fish comfortably in milk-pans; and in 
enticing the gravid female (which justly fears him) to 
approach his nest. To effect the last purpose he curvets 
in front of her, and goes to the nest and back to her, in 
much the same manner as a dog will run to the gate to 
lead his master out for a walk. The male fans the eggs 
almost continuously with the front fins (pectorals), and 
meanwhile remains close to the nest, the tail throwing 
back a counter-balancing current of water, which is often 
enough to cause a wave on the surface of shallow water, 
and indicates the force exercised by the fish. The use of 
the pectoral fins at these times is exactly contrary to that 
usual in this and other fish. When the young stray, the 
male Stickleback takes one at a time quite inside his 
mouth, returns with mouth closed and gills motionless, and 
blows the burden into the crowd of fry in and about the 
nest. The traveller, expelled violently, turns over and 
over helplessly, but soon regains its balance. 
The male keeps strictly to his own nest, and recognises, 
quite obviously, the rights of his neighbours in this 
