PLOT? A. OF CORNWALL 
91 
in which Cornwall seems to he especially rich—are greatly increased, 
mainly from Mr. Pugsley’s Fumarict Supplement to this Journal for 
191- ; we note that F. major Badarro is retained for F. paradox a 
Pugsley, which is placed as a synonym ; the distinctness of the two 
plants is established by Mr. Pugsley in the Supplement (p. 35), and 
his identification (in Journ. Linn. Soc., Bot. xliv. 283 ; 1919) of 
F. paradoxa with F. Martinii Clavaud lias been overlooked ; Viola 
has also received many accessions in connexion with Mrs. Gregory’s 
monograph and Dr. 1)rabble’s Supplement to this Journal for 1909—- 
V. epipsila, Dr. Vigurs thinks, will prove to be the common Cornish 
marsh violet; and Euphrasia has been elaborated in accordance 
with Bucknall’s monograph (Journ. Bot. Suppl. 1917) and recent 
observations: “ strica ” (for strict a ; p. 103) is one of the few mis¬ 
prints in the book. A slip of another kind is that which credits 
Messrs. Baker and Salmon (Journ. Bot. 1920, 121) with the division 
of Erodium cicutarium into “five new species” (p. 37). There is an 
interesting note on Atropis festucceformis , with regard to which 
confusion had arisen ; the plant so recorded from Ireland proves not 
to be that species, but specimens, authenticated by Dr. Stapf, were 
found by Mr. Thurston in Egloshayle Marsh in 1918. “The Eglo- 
shayle plants are recorded as Glyceria maritima Wahl. var. hibernica 
Druce in B. E. C. 1919. p. 690”—apparently on the assumption of 
their identity with the Irish plant. 
We learn from the introduction, which is followed by a biography 
by Dr. Vigurs, that Davey’s herbarium was acquired at his death by 
the Boyal Institution of Cornwall, and is now placed in the Truro 
Museum, where also B. A 7 . Tellam’s herbarium is preserved. So much 
care has evidently been spent upon the little volume that we are 
surprised that a reference to the page of the Flora is not prefixed to 
the additional records of the species included therein, thus greatly 
facilitating collation. 
Practical Plant Biochemistry. By Muriel Wiieldale Onslow. 
2nd edition. Cambridge University Press, 1923. 8vo, pp. 194. 
12s. (jd. net. 
As our knowledge of the chemistry of plants advances, it is 
essential that an attempt should be made to render the practical 
aspects of the subject available to the ordinary student of Botany 
and Chemistry. As is aptly pointed out in the author’s preface to 
the work under consideration, such knowledge is at present acquired 
partly in chemical and partly in plant physiological laboratories, with 
the result that there is a gap in the teaching which it is the author’s 
purpose to fill. There can be no doubt that Miss Onslow has achieved 
this object with success, and has produced a book which not only 
provides much valuable information in a concise form but at the same 
time gives the necessary instructions for performing a large number 
of well-selected experiments. 
After an introduction and a brief section on colloids, successive 
chapters deal with plant enzymes, chlorophyll, carbohydrates, vege- 
