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Insectivorous Plants (Part II). 
einfache Lappen der Primarschlauche ist.’ Their structural 
relations and vascular supply prove them to be lateral paired 
outgrowths from beneath the apex, and therefore confirmatory 
of the writer’s contention. 
Professor Bower says : ‘ Dr. Macfarlane would appear to 
recognize any convexity of margin of the wing, however 
slight and however late in its appearance, as a leaflet or 
pinna, whereas I should reserve these terms for only such 
growths as arise at an early period in definite order upon the 
wings and appear as convexities with a clearly defined contour. 
Pursuing his less rigorous method, Dr. Macfarlane finds 
himself landed in a view as to the leaves which is too 
unwieldy to appear natural ; my own explanation has at 
least the quality of relative simplicity.’ ’ In the first part of 
the above quotation, Professor Bower misinterprets me, for 
as already noted I should limit the term leaflet only to such 
divisions of the wings as are completely isolated down to the 
mid-rib, no matter when they appear or how broad their 
attachment. In this way only has it been used. Rigorous 
methods are wholly commendable, but arbitrary ones may 
lead to imperfect views, and such expressions as ‘ wings of the 
phyllopodium,’ ‘ developments of those wings,’ ‘ a phyllo- 
dineous flap,’ and ‘ a flattened termination of the leaf 5 result. 
In attempting to reduce such pitchered leaves to the 
standard of simple peltate ones, Goebel has no natural 
explanation for the dorsal flaps in all the genera, for the 
successive peltate fusions in Nepenthes , or for the lid-formation 
in all. One reason for my advancing the opinions already 
given was that it introduced a simple uniformity in explanation 
of these puzzling types which in effect coincided with results 
drawn from observation of anatomical detail and floral 
structure. I must therefore adhere to the views already 
expressed. 
The author gratefully acknowledges his indebtedness for 
supplies of material to the Directors and Curators of the 
Royal Botanic Gardens of Kew, Glasnevin, and Edinburgh, 
as also to Messrs. Burbidge, Courtauld, and Veitch. 
