284 PROCEEDINGS OF SOCIETIES. 
drawing, which forms no unimportant part of the work of a botanical 
arti 
st. 
Some useful hints are contained in the concluding chapters, but we 
do not understand why we are to wait till the paper is “‘ quite dry” 
before laying on the colours. We imagined the purpose of wetting it 
was that, after being pressed by the blotting-sheet, it might retain 
some moisture which would soften the edges and assist in blending 
the colours; and if our memory is right, Ruskin, in place of our 
~ author’s “ well-filled brush,” advises ‘ very little colour in the brush” 
to the young painter. H. B 
Proceedings of Socictics. 
of those or 4. ooscura or Mf. elegans.— On the Development of 
the Gyneecium and the Method of Impregnation in Primula vulgaris.” 
the free placenta (or, as the author prefers to call it, the stroma), as 
, but the two are in organic connection at the base; 
which is lined by a layer of dense cells. The style is not hollow but 
solid. The ovules originate from the stroma, and are exceedingly 
simple, consisting merely of an external coat and the embry0-sac ; 
_ the micropyle is placed close to the hilum, and so is in close proximity 
to the stroma. Running up the centre of the stroma is a vascular 
