Or to take the small but welldefined group of five-leaved pines, all the species of which may be seen growing side by side at Kew under identical conditions: we have the Weymouth pine (Pinus Strobus) in eastern North America, P. monlicola and the sugar pine (P. Lambertiana) in California, P. Ayacahwite in Mexico, the Arolla pine (P. Cembra) in Switzerland and Siberia, P. Peuce in Greece, the Bhotan pine (P. excelsa) in the Himalayas, and two other species in Japan.
In a more restricted sense it is used to connote certain thin layers of bony fragments, which occur upon welldefined geological horizons.
Such excessive multiplication of the larger taxonomic divisions shows an imperfect sense of proportion, for if the term " class " be allowed its usual zoological value, no student can fail to recognize that the Hexapoda form a single welldefined class, from which few entomologists would wish to exclude even the Apterygogenea.
On the contrary, the districts in question have invariably formed part of the state from which it is now proposed to sever them, and they are separated from Natal by mountains which form a welldefined natural boundary.
Tombs to which the name Scythic is generally applied form a welldefined class.
But in proportion as an earlier date has become more probable for Homer, the hypothesis of Ionic origin has become less tenable, and the belief better founded (I) that the poems represent accurately a welldefined phase of culture in prehistoric Greece, and (2) that this " Homeric " or " Achaean " phase was closed by some such general catastrophe as is presumed by the legends.
ROTIFERA (or Rotatoria), a small, in many respects welldefined and somewhat isolated, class of the animal kingdom.
The femur varies considerably in form, but generally has a welldefined third trochanter.
It has strong basic properties, absorbs carbon dioxide readily, and forms welldefined crystalline salts.
The Baltic coast has generally steep welldefined banks and is irregular, being pierced by numerous long and narrow inlets (Feihrden) which often afford excellent harbours.
Welldefined wave-cut cliffs and terraces show two distinct shore-lines of this early lake, one.
In laying out the approaches and station yard of a passenger station ample width and space should be provided, with welldefined means of ingress and egress to facilitate the Passenger ci rculation of vehicles and with a long setting-down stations.
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