tr.-transverse vessel.

tr'.-smaller intermediate transverse vessel.

mh.-ordinary wide mesh.

mh'.-narrow mesh in the fold.

sg.-stigma.

All the figures are enlarged about thirty times, and were drawn as

seen through Swift's 1-inch objective.

tr.-transverse vessel.

tr'.-smaller intermediate transverse vessel.

mh.-ordinary wide mesh.

mh'.-narrow mesh in the fold.

sg.-stigma.

All the figures are enlarged about thirty times, and were drawn as seen through Swift's 1-inch objective.