2. As in the course of the mixture by which our language has been formed, we have thus lost all habitual consciousness of the difference of its ingredients, (Greek, Latin, Norman-French, and Anglo-Saxon): we have also ceased to confine to each ingredient the mode of grammatical inflexion which originally belonged to it. Thus the termination _ive_ belongs peculiarly to Latin adjectives, yet we say _sportive_, _talkative_. In like manner, _able_ is added to words which are not Latin, as _eatable_, _drinkable_, _pitiable_, _enviable_. Also the termination _al_ and _ical_ are used with various roots, as _loyal_, _royal_, _farcical_, _whimsical_; hence we may make the adjective _tidal_ from _tide_. This ending, _al_, is also added to abstract terms in _ion_, as _occasional_, _provisional_, _intentional_, _national_; hence we may, if necessary, use such words as _educational_, _terminational_. The ending _ic_ appears to be suited to proper names, as _Pindaric_, _Socratic_, _Platonic_; hence it may be used when scientific words are derived from proper names, as _Voltaic_ or _Galvanic_ electricity: to which I have proposed to add _Franklinic_. In adopting scientific adjectives from the Latin, we have not much room for hesitation; for, in such cases, the habits of derivation from that language into our own are very constant; _ivus_ becomes _ive_, as _decursive_; _inus_ becomes _ine_, as in _ferine_; _atus_ becomes _ate_, as _hastate_; and _us_ often becomes _ous_, as _rufous_; _aris_ becomes _ary_, as _axillary_; _ens_ becomes _ent_, as _ringent_. And in adopting into our language, as scientific terms, words which in another language, the French for instance, have a Latin origin familiar to us, we cannot do better than form them as if they were derived directly from the Latin. Hence the French adjectives _cétacé_, _crustacé_, _testacé_, may become either _cetaceous_, _crustaceous_, _testaceous_, according to the analogy of _farinaceous_, _predaceous_, or else _cetacean_, _crustacean_, {332} _testacean_, imitating the form of _patrician_. Since, as I shall soon have to notice, we require substantives as well as adjectives from these words, we must, at least for that use, take the forms last suggested. In pursuance of the same remark, _rongeur_ becomes _rodent_; and _edenté_ would become _edentate_, but that this word is rejected on another account: the adjectives _bimane_ and _quadrumane_ are _bimanous_ and _quadrumanous_.