What gain one would achieve by putting the text down from bottom to top? 
I can see only drawbacks.
Suppose the goal is shuffling without preparing any intermediate sample. But there is danger of running out of the folio space. This can be mitigated by moving on to the next folio (as you would do in normal writing), but that would not work in Botanical section where you do not have "the next" folio.
I can see only drawbacks.Suppose the goal is shuffling without preparing any intermediate sample. But there is danger of running out of the folio space. This can be mitigated by moving on to the next folio (as you would do in normal writing), but that would not work in Botanical section where you do not have "the next" folio.