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of a particular group of studies of as
outsiders cannot understand them, that I
call their life a science. It is not necessary
that they should all be at work upon the
same problem, or that all should be fully
acquainted with all that it is needful for
another of them to know; but their studies
must be so closely allied that any one of
them could take up the problem of any other
after a few some months of special preparation
& that each should understand pretty
minutely what it is that each one's or the others'
is work consists in; so that any two of
them meeting together shall be thoroughly
conversant with each others' ideas and