On The Death Of A Twin

Where are yee now, Astrologers, that looke
For petty accidents in Heavens booke?
Two Twins, to whom one Influence gave breath,
Differ in more than Fortune, Life and Death.
While both were warme (for that was all they were
Unlesse some feeble cry sayd Life was there  
By wavering change of health they seem'd to trie
Which of the two should live, for one must die.
As if one Soule, allotted to susteine
The lumpe, which afterwards was cutt in twain,
Now servde them both: whose limited restraynt
From double vertue made them both to faynt:
But when that common Soule away should flie,
Death killing one, expected both should die:
Shee hitt, and was deceivde: that other parte
Went to supply the weake survivers heart:
So Death, where shee was cruell, seemde most milde:
She aymed at two, and killde but halfe a childe.