15. AS'PER, _rough_.

ASPER: -ate, -ity; exas'perate; exas'peration.

AUDIRE. (See page 29.)

16. AUGE'RE: au'geo, auc'tum, _to increase_.

AUG: augment' (v.); augmentation.

AUCT: -ion, _a sale in which the price is increased by bidders_; -ioneer.
Author (Lat. n. _auc'tor_, one who increases knowledge); author'ity;
au'thorize; auxil'iary (Lat. n. _auxil'ium_, help).

17. A'VIS, _a bird_; Au'gur, Aus'pex, aus'picis, _a soothsayer_.

AUGUR: au'gur (n.), _one who foretells future events by observing the_
_flight of birds_, (v.) _to foretell_; au'gury, _an omen_; inau'gurate, _to
invest with an office by solemn rites_; inaugura'tion; inau'gural.

AUSPICI: -ous, _favorable_; inauspi'cious; aus'pices.

18. BAR'BARUS, _savage, uncivilized_.

BARBAR: -ian (n. and adj.), -ic, -ism, -ity, -ize, -ous.

19. BIS, _twice or two_.

BI: bi'ennial (Lat. n. _an'nus_, a year); big'amy (Greek n. _gamos_,
marriage); bil'lion (Lat. n. _mil'lio_, a million; literally, twice a
million); bipar'tite (Lat. n. _pars, par'tis_, a part); bi'ped (Lat. n.
_pes, pe'dis_, foot); bis'cuit (Fr. v. _cuit_, cooked); bisect' (Lat. v.
_sec'tum_, cut); bi'valve (Lat. n. _val'vae_, folding-doors); bi'nary (Lat.
adj. _bi'ni_, two by two); binoc'ular (Lat. n. _oc'ulus_, the eye);
combine'; combina'tion.

20. BO'NIS, _good_; Be'ne, _well_.

BONUS: bonus (something to the _good_ of a person in addition to
compensation), bounty (Fr. n. _bonte_, kindness); boun'teous; boun'tiful.

BENE: ben'efice (Lat. v. _fac'ere, fac'tum_, to do), literally, _a benefit,
an ecclesiastical living_; benef'icence; benef'icent; benefi'cial;
ben'efit; benefac'tion; benefac'tor; benedic'tion (Lat. v. _dic'ere,
dic'tum_, to say); benev'olence (Lat. v. _vel'le_, to will).

EXERCISE.

_In this and the following exercises, tell the roots of the words printed
in italic_: The _equator_ divides the globe into two _equal_ parts. Good
_agriculturists_ read _agricultural_ papers. In the _primeval_ ages the
_longevity_ of man was very great. The _pilgrims_ have gone on a
_pilgrimage_ to the Holy Land. The _subaltern_ had no _alternative_ but to
obey. To remove the stain a powerful _acid_ must be used. The _alimony_
which had hitherto been allowed was no longer considered _adequate_. The
discourse, though learned, was not _edifying_. God is an _eternal_ and
unchangeable being. The handsome _edifice_ was burned to the ground. The
plants and animals in the _aquarium_