26 NOTICES OF BOOKS 
It will be seen that by far the largest number of species falls into 
the lower or Mediterranean section of the Southern zone, and that a 
very much smaller pe here extends across the Atlantic than was 
the case with British plan 
( To be continued.) 
Potices of 2 of Sooks. 
wi er an diirchwachsenen men Fichteneapfon Ein Beitrag ziir 
Morphologie der Nadelhoelzer, von Dr. G. Srenzen. Mit 4 
[as aes Tafeln. Dresden, 1876. (Nova Acta der K. 
Leop.-Carol. Deuts, Akad. der Naturf., band xxxviii., nr, 3.) 
Srenze~ observed in ae Riesengebirge, i the. summer of 
or 
apex into a short shoot, bearing regularly-furmed needle-like foliage- 
leaves. The seales'of the cone were forthe most part quite regular, while 
others were curiously contorted and more or less erent. Further 
examinatior showed the most unmistakable transition — between 
t he bracts of 
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Spruce-Fir no longer questionable. In tracing the transitional forms, 
oe are to be met with at one end the needle-like leaves of normal 
; then succeed others that are shorter and broader. The next 
sat are still elongated, but rather unequally tetragonous, dark 
green in colour, and of thicker tissue. Succeeding these come 
shorter leaves, more pointed, and of an elongated triangular form, 
flattened in the centre, but having a slightly prominent rib on the 
back. In these lnst-the margin becomes irregular from indications of 
i till a ated from th 
; basal part 
cushion becomes gradually less apparent, and then disappears entirely, 
the needle now being fat thin, and at length scaly, the margin being 
“se Yotiy ce of the needle from. the cushion, pring oe illustrating this 
being figured by Stenzel. The needle and its cushion may thus be 
to the lamina and sheath of a leaf or lamina and tiole, od 
cepraton taking lace between the short sheath or setiihe ant 
: eked aoe taped were also examined which exhibited all 
intermediate stages between needle-like foliage-leaves and stamens. 
ae stalk-like structure supporting the pollen-sacs is the basal portion 
of the leaf or cushion, while the upper part represents the modified 
needle, the Esra tong being produced on the under-surface. Several 
figures are y Stenzel to illustrate the nature of the stamens. 
