This section is from the book "Facts Worth Knowing", by Robert Kemp Philip. Also available from Amazon: Inquire Within for Anything You Want to Know.
If a gentleman wants a wife, he wears a ring on the first finger of the left hand; if he is engaged, he wears it on the second finger; if married, on the third; and on the fourth, if he never intends to be married. When a lady is not engaged, she wears a hoop or diamond on her first finger; if engaged, on the second; if married, on the third; and on the fourth, if she intends to die a maid. When a gentleman presents a fan, flower, or trinket, to a lady with the left hand, this, on his part, is an overture of regard; should she receive it with the left hand, it is considered as an acceptance of his esteem; but if with the right hand it is a refusal of the offer. Thus, by a few simple tokens, explained by rule, the passion of love is expressed: and, through the medium of the telegraph, the most timid and diffident man may, without difficulty, communicate his sentiments of regard to a lady, and in case his offer should be refused, avoid experiencing the mortification of an explicit refusal.
 
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