3l 2 O F T H £ B XT ERNAL SENS E~S.

to produce this effeH, as that of Seeing, that ofSmelling, and even that of Heat and Cold, appearto do in fome particular cafes. Unufual and unex-pected Sound alarms always, and difpofes us tolook about for fome external fubftance or thingas the caufe which excites it, or from which itproceeds. Sound, however, conlidered merelyas a fenfation, or as an affedtion of the organ ofHearing, can in moft cafes neither benefit norhurt us. It may be agreeable or difagreeable,but in its own nature it does notfeem to announceany thing beyond the immediate feeling. It Ihouldnot therefore excite any alarm. Alarm is alwaysthe fear of fome uncertain evil beyond what is im-mediately felt, and from fome unknown and ex-ternal caule. But all animals, and men amongthe reft, feel fome degree of this alarm, ftart,are roufed and rendered circumfpeCl and attentiveby unufual and unexpected Sound. This effeH,too, is produced fo readily and fo inftantaneoullythat it bears every mark of an inftincilve fuggel-tion of an imprefiion immediately ftruck by thehand of Nature, which does not wait for any re-colleftion of paft obfervation and experience. Thehare, and all tliofe other timid animals to -whomflight is the only defence j are fuppofed to pofiefsthe fenfe of Hearing in the high eft degree ofaflivenefs. It feerns to be the fenfe in whichcowards are very likely to excel.

The three fenfes of Seeing, Hearing, and Smel-ling, feem to be given to us by Nature, not 1bmuch in order to inform us concerning the actual