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Habitat. 
Mode of Locomotion. 
Mode of Breathing. 
Kind of Food Used. 
. Classification. 
Topics for Reports. 
Sea-anemones. 
Coral Reefs. 
Florida. 
Islands. 
Commensalism. 
lecting Ccelenterates. 
mBpdw hd x 
ANIMAL ACTIVITIES. 
The Portuguese Man-of-war. 
Coral Islands. 
How Corals Have Helped to Build 
The Origin of Plants and Animals on Coral 
Examples of Alternation of Generation. 
Colonies. 
The Origin of Atolls. 
Experiences while Col- 
Parasitism. Symbiosis. 
VOCABULARY. 
Cam panula’rian (Lat. dim. of 
campana, a bell), a kind of hy- 
droid whose feeding zooids live 
in a bell-shaped case. 
Com men’salism (Lat. cum, to- 
gether, and memnsa, a table), a 
state of living together for mutu- 
al advantage, asin the case of the 
hermit-crab and hydractinia. 
Her maph’ro dite (Gr. Hermaphro- 
ditos, the son of Hermes and 
Aphrodite), having both male 
and female reproductive cells in 
the same animal. 
Hy’dranth (Gr. hydor, water), one 
of the nutritine zooids of a hy- 
droid colony. 
Hypo stome (Gr. Aygo, under, and 
stoma, a mouth), the part of a 
hydroid animal bearing the 
mouth at its summit. 
Las’so cell (Lat. /agueus, a snare), 
a sensitive nettling-cell contain- 
ing a coiled thread. 
Me du’sa (Lat. Medusa, one of the 
Gorgons), an umbrella-shaped, 
free-swimming jelly-fish. 
Mes’en tery (Gr. mesos, middle, 
and exteron, intestine), one of 
the radiating walls in the body 
of a:polyp. 
O’vum (Lat. ovum), an egg. 
Pol’yp (Gr. polys, many, and fous, 
foot), a feeding zooid of a hy 
droid or coral-forming colony. 
Sep’tum (Lat. septum, a fence), a 
radiating portion of a coral skel- 
eton. ‘ 
Ten’'tacle (Lat. ¢ento, to try ‘to 
hold), a feeler around the mouth 
of a ceelenterate. 
The’ca (Gr. theké, a case), a 
portion of a coral skeleton. 
Zo’oid (Gr. zoém, an animal, and 
oid, like), one of the members of 
a coelenterate colony. 
