Thanks to Manfred for posting about this :
viewtopic.php?f=6&t=11120&sid=f4b261ccd ... 374#p92668
which raised my curiosity and instituted a google
![Smile :)](./images/smilies/icon_e_smile.gif)
I have never done this before but a few minutes preparation before this evenings meal and a few minutes later in the evening, to peel it off and mount on a slide, I had the interesting pics of stomata shown below.
The first is with a 20x achromat projection to a Canon aps-c sensor and shows the pattern of stomata in regions bounded by (veins perhaps?) structures similar to those in Manfred's leaf. Botanists among us could point out interesting aspects ? please.
The second is with a 60x achro.
It could benefit from either pressing down on the cover slip to flatten the cast or a focus stack perhaps.
The method : I had no nail varnish,
so I used PVA white wood glue, Poly Vinyl Acetate, (not to be confused with PVAlcohol) which dries clear, dabbed on in a small patch onto the underside of a leaf, when dry teased off with tweezers.
An interesting learned paper has suggestions for more exotic casting compounds ,,here
https://naldc.nal.usda.gov/download/26830/PDF
All very entertaining and more experimentation tomorrow
![Smile :)](./images/smilies/icon_e_smile.gif)