According to Armstrong, anthracene behaves unsymmetrically towards substituents, and hence one lateral ring differs from the other; he represents the molecule as consisting of one centric ring, the remaining medial and lateral ring being ethenoid.
The longitudinal system is discontinuous, and is subdivided into proximal, medial and distal portions.
(7) (2) Phenanthrene is regarded by Armstrong as represented by (3), the lateral rings being benzenoid, and the medial ring fatty; Bamberger, however, regards it as (4), the molecule being (3) (4) entirely aromatic. An interesting observation by Baeyer, viz.
The length of its medial line N.
For general purposes, however, the symbol (2), in which the lateral rings are benzenoid and the medial ring fatty, represents quite adequately the syntheses, decompositions, and behaviour of anthracene.
A few intermont areas in the north-west part of the province have outlet westward by Kla1nath river through the Cascade range and by Pitt river (upper part of the Sacramento) through the Sierra Nevada: a few basins in the south-east have outlet by the Rio Grande to the Gulf of Mexico; a much larger but still narrow medial area is drained south-westward by the Colorado to the head of the Gulf of California, where this large and very turbid river has formed an extensive delta, north of which the former head of the gulf is now cut off from the sea and laid bare by evaporation as a plain below sea-level.
All that can be said at present about this difficult etymology is that in the non-Semitic Babylonian the medial m represented quite evidently an indeterminate nasal which could also be indicated by the combination rig.
The medial portion forms radiating tracts of fibres, the so-called " bell-muscles " running underneath, and parallel to, the radial canals; when greatly developed, as in Tiaridae, they form ridges, so-called mesenteries, projecting into the sub-umbral cavity.
The retention of medial f which in Latin became b; 2.
These constellations were arranged in three concentric annuli, the northern ones in an inner annulus subdivided into 60 degrees, the zodiacal ones into a medial annulus of 1 zo degrees, and the southern ones into an outer annulus of 240 degrees.
The interpunct is double with the Umbrian alphabet, single and medial with the Latin.
Taking the Atlantic as our simplest type, we may say that the surface of an ocean basin resembles that of a mighty trough or syncline, buckled up more or less centrally in a medial ridge, which is bounded by two long and deep marginal hollows, in the cores of which still deeper grooves sink to the profoundest depths.
An original medial p preceding the chief accent of the word also appears as b in English and the other members of the same group. It is not certain that any English word is descended from an original word beginning with b, though it has been suggested that peg is of the same origin as the Latin baculum and the Greek (6 KTpov.
With the exception of the extreme north (Commagene), which is shut off by a barrier of hills and belongs to foreign hydrographic systems, the whole country is roughly a gable-shaped plateau, falling north and south from a medial ridge, which crosses Syria at about its central point.
This gable is tilted eastwards, and its two long slopes are defined by bordering mountain chains which run across its medial ridge; the main Syrian streams are those which follow those slopes between the 'chains, thus running either north or south for most of their courses, and only finding their way to the western sea by making sharp elbows at the last.
Between these systems run the main rivers; and these naturally rise near the medial ridge, in the lacustrine district of el-Buka`a, or Coelesyria, and flow in opposite directions.
CH(CH 3) CH 3, isobutane, substitution occurring at the medial atom.
H; (2) the retention of s between vowels; (3) the change of medial and initial d to 1; (4) the retention of medial f which became in Latin b or d; and (5) the change of Ind.-Eur.
AUGUST FRIEDRICH GFRORER (1803-1861), German historian, was born at Calw, Wurttemberg, on the 5th of March 1 So written, with a medial mem (.) instead of the final (o).
Its length from Cape Maisi to Cape San Antonio along a medial line is about 730 m.; its breadth, which averages about 50 m., ranges from a maximum of 160 m.
Benzenoid rings as represented by the symbols: - Anthracene Phenanthrene In both cases the medial ring is most readily attacked; and various formulae have been devised which are claimed by their authors to represent this and other facts.