The proOtic encloses between it and the lateral occipital the fenestra ovalis, into which fits the columella of the ear.
16), extending between the fenestra ovalis and the tympanic membrane or drum, consists of (I) the long and slen der columella, a straight, ossified rod which fits with a disk into the fenestra r; t st ovalis; it is homologous with the stapes (m.st.), although not stirrupshaped; (2) the extra-columellar mass.
The works of Columella (1st century A.D.) and of Palladius (4th century A.D.) are exhaustive treatises, and the Natural History of the elder Pliny (A.D.
Monodonta, no jaws, spire not prominent, no umbilicus, columella toothed.
Mc, Columella muscle (muscular process grasping the shell).
20, will serve to exhibit the disposition of viscera which prevails in the group. The branchial chamber formed by the mantle-skirt overhanging the head has been exposed by cutting along a line extending backward from the letters vd to the base of the columella muscle mc, and the whole roof of the chamber thus detached from the right side of the animal's neck has been thrown over to the left, showing the organs which lie upon the roof.
This columella muscle is the same thing as the muscles adhering to the shell in Patella, and the posterior adductor of Lamellibranchs.
Shell solid, piriform, with thick folded columella; lateral teeth of radula bicuspidate.
Shell fusiform and solid, aperture elongated, columella folded; no operculum; eyes on sides of tentacles.
Occupying the axis, and exposed by the section, is seen the "columella " or spiral pillar.
Shell ovoid, with short spire and folded columella; foot small, no operculum; siphon short.
Spire of shell prominent, aperture narrow, canal very short, columella crenelated; foot large.
Shell ovoid, with short spire, wide aperture and folded columella; inferior pallial lobe thick; visceral commissure still twisted.
Of Lucretius, Columella, Silius Italicus, Manilius and Vitruvius were unearthed, copied by his hand, and communicated to the learned.
Columella, like Xenophon, favours a certain friendliness and familiarity in one's intercourse with his farm slaves.
Columella regarded the gains from the births as a sufficient motive for encouraging these unions, and thought that mothers should be rewarded for their fecundity; Varro, too, seems to have taken this view.
Cato, Varro and Columella all agree that slave labour was to be preferred to free except in unhealthy regions and for large occasional operations, which probably transcended the capacity of the permanent familia rustica.
In Virgil's time the varieties in cultivation seem to have been exceedingly numerous; and the varied methods of training and culture now in use in Italy are in many cases identical with those described by Columella and other Roman writers.
He wrote a poem on agriculture (De re rustica) in fourteen books, the material being derived from Columella and other earlier writers.
The quadrate is indirectly articulated with the skull, first by the horizontal, movable squamosal, secondly by the columella auris.
Columella cranii Mostly present.
The presence or absence of a columella in the former, the formation of an investment round the latter.
After the war Lowell abandoned politics, and won for himself the title of "the Columella of New England" by his interest in agriculture - he was for many years president of the Massachusetts Agricultural Society.
The chief or only changes which domestication seems to have induced in its appearance are a tendency to albinism generally shown in the plumage of its lower parts, and frequently, though not always, the conversion of the colour of its legs and 1 Columella (De re rustica, viii.
Many of the instruments and processes of Portuguese agriculture and viticulture were introduced by the Romans, and are such as Columella described in the 1st century A.D.
In Ephedra helvetica, as described by Jaccard, no proembryo or suspensor is formed; but the most vigorous fertilized egg, after undergoing several divisions, becomes attached to a tissue, termed the columella, which serves the purpose of a primary suspensor; the columella appears to be formed by the lignification of certain cells in the central region of the embryo-sac. At a later stage some of the cells in the upper (micropylar) end of the embryo divide and undergo considerable elongation, serving the purpose of a secondary suspensor.
(4) The columella, a structure which occupies the centre of the calicle, and may arise from the basal plate, when it is called essential, or may be formed by union of trabecular offsets of the septa, when it is called unessential.
S, Stomodaeum; c, c, coenosarc; col, columella; T, tabulae.
In the former case the young daughter zooid, with its corallum, arises wholly outside the cavity of the parent zooid, and the component parts of the young corallum, septa, theca, columella, &c., are formed anew in every individual produced.
Thus in the family Stauridae there are four chief septa whose inner ends unite in the middle of the calicle to form a false columella, and in the Zaphrentidae there are many instances of an arrangement, such as that depicted in fig.