, ingenue,
engine, engineer, hygiene, hydrogen, oxygen, endogen, primogeniture,
philoprogeniture, miscegenation. Some of these are professional rather
than social; you decide not to leave your card at their doors. Others have
assumed a significance somewhat un_gen_-like, though the relationship
may be traced if you are not averse to trouble, Thus _engine_ in its
superficial aspects seems alien to the idea of born. But it is the child
of _ingenious_ (innate, inborn); _ingenious_ is the inborn power
to accomplish, and _engine_ is the result of the application of that
power. Whether you care to bother with such subtleties or not, enough
_gens_ are left to make the family one well worth your cultivation.

Thus by studying two words, _conchology_ and _eugenics_, you
have for the first time placed yourself on an intimate footing with three
verbal families--the _ologies_, the _eu's,_ and the _gens_.
Observe that though you studied the _ologies_ apart from the
_eu's_ and the _gens_, your knowledge--once you have acquired
it--cannot be kept pigeonholed, for the _ologies_ have intermarried
with both the other families. Hence you on meeting _eulogy_ can
exclaim: "How do you do, Mr. Eu? I am honored in making your acquaintance,
Mrs. Eu--I was about to call you by your maiden name; for I am a friend of
your sister, the Miss Ology who married Mr. Conch. And you too, Mr. Eu--I
cannot regard you as a stranger. I have looked in so often on the family
of your brother--the Euphony family, I mean. What a beautiful literary
household it is! Yet it has been neglected by the world-yea, even by the
people who write. Well, the loss is theirs who do the neglecting." And
_genealogy_ you can greet with an equal parade of family lore: "Don't
trouble to tell me who you are. I am hob and nob with your folks on both
sides of the family, and my word for it, the relationship is written all
over you. Mr. Gen, I envy you the pride you must feel in the prominence
given nowadays to the _eugenics_ household. And it must delight you,
Miss Ology-that-was, that connoisseurs are so keenly interested in
_conchology_. How are Grandfather Gen and Grandmother Ology? They
were keeping up remarkably the last time I saw them." Do you think words
will not respond to cordiality like this? They will work their flattered
heads off for you!

EXERCISE - Relationships

1. For each of the following words (a) determine what families are
intermarried, (b) ascertain the exac