The "4 Ages of Man" Folio

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Anton,
yes, the two do seem to be made as some kind of a pair.

For anyone who hasn't seen it there is a discussion of this on Nick Pelling's site (the link is on Stephen's page too) where he makes some parallels between the figures on both folios:
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Personally I've always thought that the "hand warmer" and the object held by the figure on the left side of the circle on the opposite page look like alembics or kerotakis.
This type of object of course, also relates to the idea of transformation of matter over a period of time, just like the changes of seasons or age... I believe this may be a theme.
The following images are just for illustration, as they are both too late for actual comparison, but this type of stuff is pretty standard and you find similar ones in the 14th/15th C.
I'll dig up a better one when I can, but you get the idea:

    
1st image: pinterest, 2nd image: You are not allowed to view links. Register or Login to view..  Andreas Libavius Alchymia, 1606,