154 EXTRACTS AND NOTICES. 
been coarser for thirty years last past than formerly, which may 
be occasioned by their reais these camer ”’_JLisle’s ‘ Observa- 
tions in Sais: p. 2938.—R. A. Pry 
Devetorment or Heat in Frowers or Payrenepnas. — It has 
lon ng been an admitted fac ¢ that many plants at their pee of 
flowering exhibit appreciable oe of temperature: Lamar 
rather more than a century ago, was, I believe, the first to ra 
the phenomenon. As the few He 1 have had the time or oppor- 
tunity of thus far consulting contain no mention of the behaviour 
of the Ivory Palm (Phytelephas macrocarpa), I now write to put 
briefly on record two or three observations ene that plant. 
A fine example (female) was recently in flower in the House No. 1 
Kew. pril 20th, at 1 p.m., Eioaare of this house 
was 68° ial the bulb of the iormioueter, which had been 
suspe — for some time near the plant in question, was placed in 
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of a plant like the Phytelephas, with such a large surface for 
=tsog ane &c., is considerably lower than that of the surrounding 
in any case the actual increase in temperature is remarkable. 
ike of the inflor esence, eed rose to the same height as that 
reached the preceding day, viz., 92°. As the drawn-out end of the 
bulb prevented it from sails touching the convex ovaries, @ 
small incision was made in one of these, and the thermometer then 
rose to 94°. Within the last week Philodendron sagittifolium, with 
- anthers nearly ready to dehisce, showed a rise from 69° to 81°, 
P. eximium, at a time when by sun Apa the house had risen 
. 82°, exhibited a further increase of 10°. Carludovica —_ 
rose ates 78° to 90°, but this last was certainl n good 
condition, for the long barren stamens had already changed from 
creamy- -white to cinnamon colour, and the spathe had commenced 
to decompose, although not three hours had elapsed since the 
flowers had opened.—Grorcr Nicnoxson. 
Extracts and Notices of Books and Atemoirs. 
THE FLORA OF COLONSAY AND ORANSAY. 
[Iv the last part (vol. xiv., part 1) of the ‘ Transactions of the 
Botanical Society of Edin nburgh’ is an interesting paper by Mr. 
Chae Grieve on the Flora of prs islands of the Lower 
ebrides. The islands seem not ave been previously 
examined botanically, the only record at plants from them being 
that in Lightfoot’s ‘Flora Scotiea,’ in which ten species are 
included, We extract the enumeration of species, referring our 
