he discovered the rate of motion for each. Dr.
Goodale tells us how to trace the motion of ordinary growth. But think
of the myriads of plants which have not yet been examined, any one of
which is likely to yield suggestive results.

If a woman loves flowers and does not care for botany, she has the whole
beautiful domain of horticulture open to her. Naturally she will have a
garden of her own and be connected with some flower mission. But she
might do more. A rich woman in the country who determined to make that
her principal work could easily interest every child in the community in
a garden, and by perseverance she might make the whole village blossom
with new beauty. In the city she might be the means of making the
balconies in whole streets lovely with growth.

I heard of a young lady not long ago who was raising spiders for the
purpose of studying their habits. If she is in earnest, and has the
intelligence to try experiments, she may some day contribute something
substantial to scientific knowledge. I have heard of another who is
raising snails, and of still another who makes a specialty of
caddis-flies. Most people consider such work innocent and amusing, but
it may easily be made more. Take the question of the antennas of
insects. It took the combined experiments of a German and an American to
discover that the plumed antennae of the male mosquito vibrated
differently to different parts of the female's song, thus representing
an outward ear. Now, of the two hundred thousand known species of
insects, all of which have antennae, probably less than fifty have been
examined with anything like patience. These organs apparently serve in
some cases for touch, and sometimes for smell. It will take years of
study by hundreds of people to make the experiments necessary to decide
on their relations to the senses and the brains of insects. When they
are thoroughly understood, some light may be thrown on our own brain and
senses.

Who but the rich can have leisure for such important experiments? Yet
any girl with a school knowledge of zooelogy could begin to work with
some common insect, and be all the better for spending several hours
every day in such a pursuit.

I know a lady devoted to zooelogy who has many opportunities to travel.
She comes home laden with rare specimens which she distributes to all
the people she knows who can appreciate them; and another who has given
several years past to the study of geology. S