als. Our active
practitioners read these by preference over almost everything else. Our
specialists, more particularly, depend on the month's product, on the
yearly crop of new facts, new suggestions, new contrivances, as much
as the farmer on the annual yield of his acres. One of the first wants,
then, of the profession is supplied by our library in its great array of
periodicals from many lands, in many languages. Such a number of medical
periodicals no private library would have room for, no private person
would pay for, or flood his tables with if they were sent him for
nothing. These, I think, with the reports of medical societies and the
papers contributed to them, will form the most attractive part of
our accumulated medical treasures. They will be also one of our chief
expenses, for these journals must be bound in volumes and they require
a great amount of shelf-room; all this, in addition to the cost of
subscription for those which are not furnished us gratuitously.

It is true that the value of old scientific periodicals is, other things
being equal, in the inverse ratio of their age, for the obvious reason
that what is most valuable in the earlier volumes of a series is drained
off into the standard works with which the intelligent practitioner is
supposed to be familiar. But no extended record of facts grows too old
to be useful, provided only that we have a ready and sure way of getting
at the particular fact or facts we are in search of.

And this leads me to speak of what I conceive to be one of the principal
tasks to be performed by the present and the coming generation of
scholars, not only in the medical, but in every department of knowledge.
I mean the formation of indexes, and more especially of indexes to
periodical literature.

This idea has long been working in the minds of scholars, and all who
have had occasion to follow out any special subject. I have a right to
speak of it, for I long ago attempted to supply the want of indexes in
some small measure for my own need. I had a very complete set of the
"American Journal of the Medical Sciences;" an entire set of the "North
American Review," and many volumes of the reprints of the three leading
British quarterlies. Of what use were they to me without general
indexes? I looked them all through carefully and made classified lists
of all the articles I thought I should most care to read. But they soon
outgrew my lists. The "North American Review" ke