LIFE'S SIMPLEST CHILDREN. 25 
pieces of shell (/*', V\£. 4), which the little archil 
has used to build the walls of his house, when for 
some reason the ordinary material was deficient. It 
seems to me that the power of this living drop to 
choose its own materials is one of the most wonderful 
facts in the history of life's simplest child; 
These miliolitcs and other Foraminifera when 
found clinging to sca-wced are easily placed in a salt- 
water aquarium, and they will then thrust their 
threads out of the mouth of the shell and crawl on 
the sides of the glass. Professor Schultze even saw 
a number of young miliolitcs born in an aquarium, 
and this was how it happened. He noticed one day 
that several of his miliolitcs had covered the 0:1 
of their shells with their brown slimy body, and a 
few days later he could see through the microscope 
a number of dark-looking specks gradually loosening 
themselves from this slime. 
There were as many as forty of these specks on 
one shell, and after a time he could distinguish that 
every speck was a tiny miliolitc, having only one 
chamber (1, Fig. 5) to begin life in, the shell of 
which was so pale and transparent that he 
see the slime within it. As soon as 
shook himself free from the rest d' the slime, he 
put out his threads and crawled away on t: 
to get his own living; and now when P 
Schultze examined the shell of the | 
he found it almost empty. The mother had 
herself up into her little children ! 
A miliolitc builds generally 
chambers, but Other forms, such as uild 
hundreds oi separate apaii 
