Botany and Zoology. 249 
Why, we would ask, need the word gravity or gravitation be 
used at all in this connection ? 
The introduction to this volume contains a short article upon 
the terminology which is adopted in it, chiefly as regards such 
_ words as epinasty and hyponasty, geotropism and related terms, 
which it is most convenient to employ, and also the names of the 
several parts of the embryo and seedling. This is, we believe, 
almost the first English book in which the axial part of the dico- 
tyledonous embryo below the cotyledons (the radicle of the syste- 
matic botanists even of the present day) is distinctly recognized 
as hypocotyledonous or initial stem, although on the continent 
a. grows from the lower end of the caulicle (or “ hypocot ae 
Have all along applied to the caulicle. Although initial stem an 
initial root are most clearly discriminated in the present volume, 
ermi 
dons, it appears to be implied or stated, either that it 1s the root- 
part which first rojects from the seed-coats and that the stem- 
part begins its development later, or that the axial part of the 
bryo conspicuously preéxisting in the seed is root and not 
Stem. We take it to be quite otherwise, namely, that this axial 
part in the seed is cauline, and that ordinarily it protrudes or 
makes some growth in length before root-formation begins. 
A few misprints of names of plants will in nowise mislead or 
trouble any botanist, except possibly in the case of Apium 
gage which on p. 422 and 424, and in the index, is printed 
P08, : 
2. Eucalyptographia: A Descriptive Atlas of the Hucalypts 
of Australia and the adjoining islands ; by Baron Frrp. von 
ie R, K.C.M.G. London and Melbourne: 1880.—This is the 
‘Sixth decade of the Atlas, and contains descriptions of the follow- 
ri. Species: Hucalyptus buprestium, globulus, megacarpa, min- 
g 
: eas Gum-tree,” contains many facts of interest,which may 
Mere briefly noticed. 
