On the structure and affinities of Dipteris , with notes on the geological history of the dipteridinæ

1901 ◽  
Vol 68 (442-450) ◽  
pp. 373-374 ◽  
Keyword(s):  
New Guinea ◽  
The Other ◽  
Tropical Region ◽  
Geological History ◽  
Malay Peninsula ◽  
Northern India ◽  
History Of ◽  
Recent Species ◽  
Vertical Annulus

The generic name Dipteris instituted by Reinwardt in 1828 is applied to four recent species— Dipteris conjugata (Rein.), D. Wallichii (Hook. and Grev.), D. Lobbiana (Hook.), and D. quinquefurcata (Baker). Dipteris Wailchii occurs in the sub-tropical region of Northern India; the other species are met with in the Malay Peninsula, Java, New Guinea, Borneo, and elsewhere. It has been customary to include Dipteris in the Polypodiaceæ, and to describe the sporangia as having an incomplete vertical annulus.

scholarly journals VII.—On the Geological History of the Cornish Serpentinous Rocks

1886 ◽  
Vol 3 (8) ◽  
pp. 359-367
Author(s):  
J. H. Collins
Keyword(s):  
East Coast ◽  
Point Of View ◽  
Open Cavity ◽  
The Other ◽  
Geological History ◽  
History Of ◽  
The One ◽  
Great Mass

My argument that at Porthalla there is a “passage” from hornblende-schist to serpentine; or rather that some beds of a common series have been changed into serpentine, others into hornblende-schist, and others again into a substance of intermediate character, is, I think, much strengthened by the fact that many such “apparent passages” are admitted to exist by all those who have examined the Lizard Coast with any degree of detail. De la Beche's description of that seen near the Lizard Town is as follows, and it would apply equally well to the others. “The hornblende slate,” he says, “supports the great mass of the Lizard serpentine with an apparent passage of the one into the other in many places—an apparent passage somewhat embarrassing,” that is, from his point of view; from mine it is perfectly natural. He goes on to say: “Whatever the cause of this apparent passage may have been, it is very readily seen at Mullion Cove, at Pradanack Point, at the coast west of Lizard Town, and at several places on the east coast between Landewednack and Kennick Cove, more especially under the Balk … and at the remarkable cavern and open cavity named the Frying-Pan, near Cadgwith.” At Kynance some of the laminse of serpentine are not more than one-tenth of an inch in thickness for considerable distances.

scholarly journals X.—The Aborigines of Tasmania. Part III. The Hair of the Head compared with that of other Ulotrichi and with Australians and Polynesians

1915 ◽  
Vol 50 (2) ◽  
pp. 309-347 ◽  
Author(s):  
William Turner
Keyword(s):  
New Guinea ◽  
The Other ◽  
Malay Peninsula ◽  
The Pacific ◽  
University Of Edinburgh ◽  
The Individual ◽  
The University

A number of years ago I began to form and arrange in the Anatomical Museum of the University of Edinburgh a collection of the hair of the head to illustrate the varieties in colour and character which exist in the Races of Men. In a classification of the races based on the colour and characters of the hair, anthropologists have usually adopted the suggestion made by Bory de St Vincent, and have divided them into two groups: Leiotrichi, with straight, smooth hair; and Ulotrichi, with woolly or frizzly hair. Each of these again is capable of subdivision.In this memoir I intend especially to examine the Ulotrichi, which comprise two well-marked subdivisions. In one the hair is very short, and is arranged in small spiral tufts, the individual hairs in which are twisted on each other, a mat-like arrangement of compact spiral locks closely set together being the result. In the other the hair is moderately long, the locks are slender, curled or spirally twisted in a part of their length and terminate at the free end in a frizzly bush-like arrangement. Ulotrichous hair is found in various African races, in the aborigines of Tasmania, New Guinea, the Melanesian Islands in the Pacific, in the Negritos of the Malay Peninsula and of some of the islands of the Asiatic Archipelago. The Leiotrichi are Australians, Polynesians, Mongols, Malays, Indians, Arabs, Esquimaux and Europeans.

scholarly journals Art. XIV.—Notes on the Early History of Northern India. Part VI On the Historical Value, Origin, and Growth of Early Methods of Record anterior to Alphabets, including Ideographic Signs, Sacred Numbers, and Myths

1890 ◽  
Vol 22 (4) ◽  
pp. 697-758
Author(s):  
J. F. Hewitt
Keyword(s):  
Early History ◽  
The Other ◽  
The Public ◽  
Public Benefit ◽  
Northern India ◽  
History Of ◽  
Combined Work

As botanists and zoologists trace the successive stages of existence traversed by living plants and animals through species and genera to families, so the historian of human progress finds himself obliged to extend his generalizations through tribes and nations to races. Research proves that it is these larger units who, through the combined work of the several component parts of the race, are the authors of the underlying ideas which are acted out in its achievements. It also seems to show that there are two races who have most materially aided in the development of civilization— one, quiet, silent, hard-working and practical, whose members have always looked on the public benefit of the tribe or nation to which they belonged as their best incentive to action: the other, impulsive, sensitive, generous, and eloquent, who have looked on personal glory and the aggrandizement of their families and personal adherents as the object of their ambition.

U–Pb geochronology of the Moyie sills, Purcell Supergroup, southeastern British Columbia: implications for the Mesoproterozoic geological history of the Purcell (Belt) basin

1995 ◽  
Vol 32 (8) ◽  
pp. 1180-1193 ◽  
Author(s):  
H. Elizabeth Anderson ◽  
Donald W. Davis
Keyword(s):  
United States ◽  
Tectonic Setting ◽  
Sedimentary Rocks ◽  
The United States ◽  
The Other ◽  
Soft Sediment ◽  
Geological History ◽  
Sedimentary Sequence ◽  
Belt Supergroup ◽  
History Of

The Mesoproterozoic Purcell Supergroup (and its equivalent in the United States, the Belt Supergroup) is a thick sedimentary sequence formed in an extensional basin of uncertain age and tectonic setting. The voluminous tholeiitic Moyie sills intrude turbidites of the lower and middle Aldridge Formation, the lowest division of the Purcell Supergroup. Many of the sills were intruded into soft sediment and one intrudes the Sullivan sedimentary exhalative (SEDEX) orebody, so their age approximates that of the sediments and the Sullivan deposit. New U–Pb dates of zircon from four sills are older than previously published U–Pb zircon ages. One sill contained concordant zircons with an age of 1468 ± 2 Ma. Near concordant zircons from the other samples have similar 207Pb/206Pb ages, indicating that all of the sills crystallized at the same time. U–Pb dates of titanites from two of these sills yielded concordant dates ranging from 1090 to 1030 Ma, indicating that they have undergone a previously unrecognized Grenville-age metamorphism. The U–Pb systematics of abraded zircons from one sill indicate that they have also been affected by this event. The recognition of Grenville-age metamorphism in the Purcell (Belt) basin suggests that the prevalent 1.0–1.1 Ga Rb–Sr and K–Ar mineral and whole-rock dates from a wide variety of Purcell (Belt) igneous and sedimentary rocks are also metamorphic, and are not ages of sedimentation or "hybrid" dates reflecting partial resetting by the ca. 760 Ma Goat River orogeny. On this basis, all sedimentation in the Purcell (Belt) basin is constrained to be older than 1.1 Ga and is probably older than 1.25 Ga.

scholarly journals Rhadinopyga n. gen. from the “Vogelkop” of New Guinea and Adjacent Islands, a New Genus of the Subtribe Cosmopsalrtiaria (Homoptera, Cicadoidea: Cicadidae)

1985 ◽  
Vol 55 (2) ◽  
pp. 275-279 ◽  
Author(s):  
J.P. Duffels
Keyword(s):  
Phylogenetic Analysis ◽  
New Genus ◽  
New Guinea ◽  
Sister Group ◽  
Historical Biogeography ◽  
Sister Group Relationship ◽  
Geological History ◽  
History Of ◽  
Relationship Of

Rhadinopyga n. gen. is erected for Diceropyga recedens (Walker) from Salawati, D. impar (Walker) and D. acuminata Duffels, both from Waigeo, and Rhadinopyga epiplatys n. sp. from the “Vogelkop” area ( = Tjendrawasih) of New Guinea and the islands of Misoöl and Batjan. Phylogenetic analysis suggests a sister-group relationship of Rhadinopyga n. gen. and Diceropyga Stål. The endemism of Rhadinopyga in the “Vogelkop” area is discussed in connection with the geological history of the area and the historical biogeography of the subtribe Cosmopsaltriaria.

The discovery of male Potiicoara brasiliensis (Crustacea, Spelaeogriphacea) with notes on biology and distribution

Zootaxa ◽  
2012 ◽  
Vol 3421 (1) ◽  
pp. 61 ◽  
Author(s):  
ANA MARIA S. PIRES-VANIN
Keyword(s):  
Sexual Dimorphism ◽  
The Other ◽  
Type Locality ◽  
Distributional Pattern ◽  
Geological History ◽  
New Findings ◽  
History Of ◽  
Species Type ◽  
First Time

The male of Potiicoara brasiliensis is reported for the first time with evidence of sexual dimorphism. Male diagnosticcharacters are described and compared with the other three species of Spelaeogriphidae. Males present differential mor-phology on both distal podomere articles of the antennula and antenna, an elongate and curved bare endopod on pleopod2, a pair of short round penes on the sternum near the base of pereopod 7, and telson with dorsum almost smooth and apexstraight. Material is sampled for the first time from karstic areas north of the species type-locality, Gruta Ricardo Franconear Corumbá City, and Gruta do Curupira in the Araras Mountains. These new findings expand the distribution of thespecies over seven hundred kilometers. Comparisons between exemplars of both sexes are presented. A hypothesis on the distributional pattern of P. brasiliensis is introduced based on the geological history of Central-West Brazil.

scholarly journals VI. On the structure and affinities of matonia pectinata, R. BR., with notes on the geological history of the matonineœ

1899 ◽  
Vol 191 ◽  
pp. 171-209 ◽  
Keyword(s):  
Special Interest ◽  
Past History ◽  
Wide Distribution ◽  
Steep Slope ◽  
Geological History ◽  
Malay Peninsula ◽  
The Past ◽  
History Of ◽  
Mountain Side ◽  
Distribution In Europe

In describing an ascent of Mount Ophir—about fifty miles east of Malacca, in the Malay Peninsula—Wallace writes as follows : “ After passing a little tangled jungle and swampy thickets, we emerged into a fine lofty forest, pretty clear of undergrowth, and in which we could walk freely. We ascended steadily up a moderate slope for several miles, having a deep ravine on the left. We then had a level plateau or shoulder to cross, after which the ascent was steeper and the forest denser till we came out upon the “ Padang-Batu,” or stone-field, a place of which we had heard much, but could never get any one to describe intelligibly. We found it to be a steep slope of even rock, extending along the mountain side farther than we could see. Parts of it were quite bare, but where it was cracked and fissured there grew a most luxuriant vegetation, among which the pitcher plants were the most remarkable .... A few Coniferae of the genus Dacrydium here first appeared, and in the thickets, just above the rocky surface, we walked through groves of those splendid ferns, Dipteris Horsfeldii and Matonia pectin, which bear large spreading palmate fronds on slender stems, 6 or 8 feet high. The Matonia is the tallest and most elegant, and is known only from this mountain, and neither of them is yet introduced into our hot-houses.” A sketch of Dipteris and Matonia accompanies this description. Both these ferns are of special interest on account of their rarity and isolation at the present day, and as living representatives of generic types which had a wide distribution in Europe during the Mesozoic epoch. The following pages deal with the structure of Matonia pectinata and with such records of fossil ferns as throw light on the past history of Matonia and closely allied genera.

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