20

LIGHT.

CAROLIN E.

Perhaps the different degrees of heat which theseven rays possess, may in some unknown manneroccasion their variety of colour. 1 have heard thatmelted metals change colour according to the dif-ferent degrees of heat to which they are exposed ;might not the colours of the spectrum be producedby a cause of the same kind r Do let us try if wecannot ascertain this, Mrs. B—? 1 should like ex-tremely to make some discovery in chemistry.

MRS. B.

Had we not better learn first what is alreadyknown ? Surely you cannot seriously imagine that,before you have acquired a single clear idea onchemistry, you can have any chance of discover-ing secrets that have eluded the penetration ofthose who have spent their whole lives in thestudy of that science.

CAROLINE.

Not much, to he sure, in the regular course ofevents; but a lucky chance sometimes happens.Did not a child lead the way to the discovery oftelescopes?

MRS. B.

There are certainly a few instances of this kind.But, believe me, it is infinitely wiser to follow up apursuit regularly, t^ian to trust to chance for yoursuccess..