402 
low handle at the 
base of the cup. The 
air blown through 
the handle expands 
the heated glass and 
rounds off the cup. 
Then two short glass 
stumps (to which 
later flagelle are to 
be attached) 
fused to the top. 
Finally the point at 
the lower end where 
the cup was attached 
to the original tube, 
are 
is melted off and a 
short glass stem to 
serve later for the 
concealed = attach- 
ment is fastened in 
its place, but a little 
laria harrimani. 
to one side of the 
THE AMERICAN MUSEUM JOURNAL 
Model representing a highly magnified specimen of the hydrozoan? Tubu- 
Welding the fine, threadlike cilia involves great difficulty; 
a very little careless manipulation will cause the blast lamp to mow down 
axis. Following this whole areas of them 
a somewhat larger 
cup is made and the finished closed cup 
is inserted into it, the outer cup is in 
2 Hydrozoa are stationary, jelly-like animals 
which attach themselves to fixed or floating ob- 
jects and feed on the marine organisms which come 
within reach of their waving tentacles. Many of 
these creatures are microscopic and many live at- 
tached to one another in colonies. Many of these 
latter may be seen in the wharf-pile group at the 
American Museum 
Glass model of a jelly fish forming part of the wharf-pile group in the Darwin Hall of the American 
Museum. The two squids shown in the picture and the colonial hydrozoa attached to the wharf-pile 
are also fashioned in glass 
