ovable part of the apparatus, and revolves around its center. Two
circular sectors, which are diametrically opposite, are each divided into
seven parts and constitute the fixed portions. In the divisions of the
upper sector are distributed the months, according to the order of the
monthly numbers. In the other sector the days of the month are regularly
distributed. In order to render the affair complete, a table is arranged
upon the movable disk for giving the annual numbers, or rather, in this
case, the annual letters. The calendar is used as follows: Say, for
example, we wish to find what days correspond to the different dates of
August, 1885; we look in the table for the letter (D) that corresponds to
this year; then we bring this letter under the given month (August) and
the days marked upon the movable disk corresponding to the dates sought,
and it only remains to make a simple reading.

[Illustration: PERPETUAL CALENDAR.]

It will be seen that the leap-years correspond to two letters. We here
employ the first to Feb. 29 inclusive, and the second for the balance of
the year. The calendar may be made of cardboard, and be fixed to
wood.--_La Nature._

* * * * *

AN ACCOMPLISHED PARROT.

Around the door of a Sixth Ave. bird store near Twenty-third St. was
gathered the other day a crowd so large that it was a work of several
minutes to gain entrance to the interior. From within there proceeded a
hoarse voice dashed with a suspicion of whisky, which bellowed in
Irish-American brogue the enlivening strains of "Peek-a-boo." With each
reiteration of "Peek-a-boo" the crowd hallooed with delight, and one
small boy, in the exuberance of his joy, tied himself into a sort of knot
and rolled on the pavement. Suddenly the inebriated Irishman came to a
dead stop, and another voice, pleasanter in quality, sang the inspiring
national ode of "Yankee Doodle," followed by the stentorian query and
answer all in one, "How are the Psi-Upsilon boys? Oh, they're all right!"

A passer-by, puzzled at the scene, made his way into the store and soon
solved the mystery. In a large cage in the center was an enormous green
and yellow parrot, which was hanging by one foot to a swinging perch, and
trolling forth in different voices with the ease of an accomplished
ventriloquist. He resumed a normal position as he was approached, and
flapping his wings bellowed out, "Hurrah for Elaine and Logan!" Then,
coc