(6) The spawning period for the majority of lobsters is July
and August. A few lay eggs at other seasons of the year--in the
fall, winter, and probably in the spring.

(7) The period of spawning lasts about six weeks, and
fluctuates slightly from year to year. The individual variation
in the time of extrusion of ova is explained by the long period
during which the eggs attain the limits of growth. Anything
which affects the vital condition of the female during this
period of two years may affect the time of spawning.

(8) The spawning period in the middle and eastern districts of
Maine is two weeks later than in Vineyard Sound, Massachusetts.
In 1893 71 per cent of eggs examined from the coast of Maine
were extruded in the first half of August.

(9) The number of eggs laid varies with the size of the animal.
The law of production may be arithmetically expressed as
follows: _The number of eggs produced at each reproductive
period varies in a geometrical series, while the length of
lobsters producing these eggs varies in an arithmetical
series._ According to this law an 8-inch lobster produces
5,000 eggs, a lobster 10 inches long 10,000, a 12-inch lobster
20,000. This high rate of production is not maintained beyond
the length of 14 to 16 inches. The largest number of eggs
recorded for a female is 97,440. A lobster 10-1/2 inches long
produces, on the average, nearly 13,000 eggs.

(10) The period of incubation of summer eggs at Woods Hole is
about ten months, July 15-August 15 to May 15-June 15. The