DESCRIPTION OF PLATES. XV 



FIG. PAGE. 



231. Cuticle from berry of holly, a glorious object from 



vivid colouring 18 



232. Transverse section of cherry stone 17 



233. Transverse section of whalebone 69 



234. Transverse section of berry of Guelder rose 17 



235. Seed of groundsel opaque 26 



236. One hair of pappus of dandelion 26 



237. Cottony hair of burdock 26 



238. Portion of pappus of goafs-beard 26 



239. Wood of young shoots of vine 19 



240. Spiral fibres from testa of wild sage seed 20 



