
250 A STROLL BY THE SEA-SIDE. 
him a careful hunt. A common worm on the coast he will 
find in the guise of a coiled white shell, firmly cemented toa 
bit of sea-weed or other substance. Sometimes a frond of 
sea-weed will be whitened with them. They are quite small, — 
and to examine them properly will require the assistanee of 7 
a lens. The head is surrounded by numerous little appe — 
dages, which answer the purpose of gills. One of the ap- ; 
pendages is thickened and rounded at the end, and serve — 
as a plug to the aperture of the shell, when the animal re- — 
tires. cn 
Fig. 14, plate 6, represents an enlarged figure of this i 
worm, with the animal protruding, and the adjoining figure 
shows a bit of sea-weed, with several of the worms drawn to 
the natural size. ya 
The adjoining cut represents the appearance of an aii- — 
mal quite abundant at low tide, commonly called the Sa- 4 
urchin. It is covered with a great = 
many long sharp spines, and in st : 
dition to these spines, there 
five zones of suckers passing from | 
the mouth, which is below, to the 
opposite pole of the body. ' 
suckers perform locomotive functions, as do the suckers of 
the starfish described above, and the collector will be 1% 
paid in watching the movements of the animal alive. - 
sea-urchin, when dead and bleached upon the beach, 10 
a very curious object. A flattened spherical shell, ge 
posed of a large number of small plates, all neatly fits 
together ; five zones of these plates perforated for the / 
sage of the suckers, and all the plates ornamented . 
minute rounded protuberances upon which the spines 
attached, make up the empty shell of the sea-urchin. 
may briefly add, that the collector will find in the pie 
dried sea-weed rolled up by the waves, many cario 
jects all prepared and dried by the sea and the su- 
the long beaches, he will find many interesting shells, 










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