large ones.
At Berne, where there appear to be more large dogs lying idly about
the streets than in any other town in Europe, I have tried the
whistle for hours together, on a great many large dogs, but could
not find one that heard it. Ponies are sometimes able to hear very
high notes. I once frightened a pony with one of these whistles in
the middle of a large field. My attempts on insect hearing have been
failures.

ANTHROPOMETRIC REGISTERS.

When shall we have anthropometric laboratories, where a man may,
when he pleases, get himself and his children weighed, measured, and
rightly photographed, and have their bodily faculties tested by the
best methods known to modern science? The records of growth of
numerous persons from childhood to age are required before it can be
possible to rightly appraise the effect of external conditions upon
development, and records of this kind are at present non-existent.
The various measurements should be accompanied by photographic
studies of the features in full face and in profile, and on the same
scale, for convenience of comparison.

We are all lazy in recording facts bearing on ourselves, but parents
are glad enough to do so in respect to their children, and they
would probably be inclined to avail themselves of a laboratory where
all that is required could be done easily and at small cost. These
domestic records would hereafter become of considerable biographical
interest. Every one of us in his mature age would be glad of a series
of pictures of himself from childhood onwards, accompanied by
physical records, and arranged consecutively with notes of current
events by their sides. Much more would he be glad of similar
collections referring to his father, mother, grandparents, and other
near relatives. It would be peculiarly grateful to the young to
possess likenesses of their parents and those whom they look upon as
heroes, taken when they were of the same age as themselves. Boys are
too apt to think of their parents as having always been elderly men,
because they have insufficient data to construct imaginary pictures
of them as they were in their youth.

The cost of taking photographs in batches is so small, and the time
occupied is so brief, when the necessary preparations have been made
and the sitters are ready at hand, that a practice of methodically
photographing schoolboys and members of other large institutions
might easily be established. I, for one, should