nd taining the yolk or vitellus. The first' step in the develop- the valve, by which the steam is turned up against the disk, ment of the egg is the formation of innumerable cells on the C. K is a lever of any suitable length for trying the valve. surface of the vitellus.which are closely packed… … of forming one straight furrow, for some reason or other, form one in quired by the crosshead,M, and bolts and nuts, N N. The the shape of a Y. Two backbones result being a safety valve that will rapidly discharge the form around the two branches,with surplus steam and cause no waste by blowing the…
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