• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 72
  • 4
  • Tagged with
  • 76
  • 76
  • 76
  • 59
  • 30
  • 20
  • 20
  • 20
  • 18
  • 8
  • 8
  • 7
  • 7
  • 7
  • 7
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Forest recession

Skead, C J (Cuthbert John) 08 1900 (has links)
Original hand-written caption "This is the only forest in the world where the species of tree known as Mtisa [Umtisa] grows. A prominent member of parliament secured the contract for removing and selling sneezewood and birchwood trees”.
42

End of trees

Skead, C J (Cuthbert John) 10 1900 (has links)
Caption "TW 14. Log washed down the Great Fish river jammes against the pillars near Eastpost station, Bedford. Oct. 1962. Tree looked like a Weeping Willow."
43

Old saw-pit, Nqantosi area, Upper Kubusie, Stutterheim

Skead, C J (Cuthbert John) January 1959 (has links)
Caption "Old saw-pit in receding forest, Nqantosi area, Upper Kubusie, Stutterheim. One figure in the pit, one on edge. Bole of latifolius yellow-wood at the edge. 1959."
44

Old engine

Skead, C J (Cuthbert John) January 1900 (has links)
Caption "Old engine used for drawing timber in Pirie Forest [illegible]. K Williams Town [King William's Town]."
45

Desecration of trees

Skead, C J (Cuthbert John) 06 1900 (has links)
Caption "Pine trees cut to allow passage of telephone wires, Graaff-Reinet street. June 1959."
46

Trees for the Western Transvaal selected on the basis of arboretum trials

Poynton, R. J. 03 1900 (has links)
Thesis (MSc)--Stellenbosch University, 1968. / ENGLISH ABSTRACT: Trees are needed on the semi-arid Highveld of the western Transvaal for shelterbelts, woodlots, fodder, honey, shade and ornament. A brief history of tree planting in the area, more particularly at Lichtenburg and Potchefstroom, is given. Relatively few species can be grown successfully in the western Transvaal because of the unfavourable climate. Hot, dry winds blow almost continuously off the Kalahari between August and October before the first, spring rains; cold winds and frosts are experienced in winter, although the summers are hot; the rainfall is erratic and low, averaging about 600 mm. a year and occurring mainly in the form of heavy thunderstorms during summer; hail is common. The geology of the area is complex. In the north-west an overburden of wind-transported sand obscures the underlying formations. The soils are mostly of a light, sandy or loamy consistency, with a fairly high base-saturation value. Concretions, sometimes forming a continuous hardpan, are characteristic of certain types. Various indigenous trees are found in some localities. These are small,and are mainly confined to rocky hillsides and stream banks. In the past they have been much exploited for rough building timber, fence posts and firewood. Their growth is very slow, and exotics have proved to be more vigorous as well as more useful in cultivation. Possible adaptations of trees to dry climates are discussed. It is concluded that'apparent adaptations observed in the field are of little value in selecting trees for dry areas. No practical alternative therefore exists at this stage to the introduction of species from .areas with a similar climate and testing these under local conditions. Parts of the world having a climate similar to that of the western Transvaal are in.dicated. Summarised results of species trials in the western Transvaal are given in tabular form, and recommendations for tree planting in the area are made. In an appendix, trials of BB species in arboreta at Lichtenburg and Potchefstroom are fully described and discussed.
47

Old steam engine at Isidenge, King Williams Town

Skead, C J (Cuthbert John) January 1959 (has links)
Caption "Old steam engine at Isidenge, King Williams Town. Such are still used by sawyers in the area beacause they can be fired by sawdust and cut-offs from the sawn timber. Gordon Ranger standing beside. 1959."
48

Bush recession

Skead, C J (Cuthbert John) 10 1900 (has links)
Caption "EW 8. Grossly overgrazed Bantu veld near Middeldrift, K.W. Town. Oct 1962. Note remnants of a few trees Schotia, etc. All […] has been removed from what must have been a well-barked kloof. The grass on the influves overeaten. "
49

Forest recession - Fuller's Bay

Skead, C J (Cuthbert John) 09 1900 (has links)
Caption "TW 5. Patch of dead coastal dune forest sand at Fuller’s Bay, East London. Sept. 1959. Surrounded by grassveld. Nearest forest in distance.”
50

Forest recession

Skead, C J (Cuthbert John) 06 1900 (has links)
Caption "TW 10. Tree ferns (left) with Aloe arborescens in back to left, and natural forest at back. Ferns and aloes side by side where forest ought to be! June 1961.”

Page generated in 0.0589 seconds