File:The Victorian naturalist (1968) (14596135329).jpg

Identifier: victoriannatura851968luca (find matches)
Title: The Victorian naturalist
Year: 1884 (1880s)

Arthur Henry Shakespeare Lucas  (1853–1936)
Alternative names	A.H.S.Lucas; Arthur Henry Shakespeare Luras; A. H. S. Lucas
Description	British botanist and entomologist
Date of birth/death	7 May 1853	10 June 1936
Location of birth/death	Stratford-upon-Avon	Albury
Authority file	: Q2865141 VIAF: 3802231 ISNI: 0000000084178738 LCCN: n81111921 Botanist: A.H.S.Lucas Open Library: OL4506631A WorldCat

Francis George Allman Barnard  (1857–1932)
	Alternative names	Birth name: Francis George Allman Barnard; Barnard; F. G. A. ‎Barnard; Francis Barnard
	Description	Australian-British naturalist, pharmacist, politician, editor and cricketer
	Date of birth/death	1857 / 26 December 1857	1932 / 2 June 1932 / 1 June 1932
	Location of birth/death	Melbourne	Melbourne
	Authority file	: Q3081456 VIAF: 40699264 LCCN: n81089221 NLA: 36356473 WorldCat

Subjects: Natural history Natural history
Publisher: (Melbourne) Field Naturalists Club of Victoria
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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arwan caveswere of probable Upper Pliocene age.No specific date can be assigned tothe Parwan Cave, but the generalorder of potassium-argon dates fromthe Parwan area is 2i million years,so the Parwan Cave is almost certainlyvery much older than the PanmureCave. 4. The Porndon Caves The caves of Mt. Porndon occur ina basalt disc surrounding and under-lying the scoria cones, and have beendescribed by Skeats and James (1937),who show the cave locations, but donot present cave surveys. There aretwo caves, which have been namedArch Cave (for the entrance archmade by collapse of part of the roof)and Rubbish Cave (for the obviousreason). Porndon Arch Cave This is one of the simplest of alllava caves. Almost straight and per-fectly tunnel-shaped for most of itslength, it has an intact lining on muchof its walls, a flat lava floor, andbenches along parts of the wall-floorjunction (Figure 6). Skeats and James believed thatpolygonal jointing of the basalt flowcould be seen in cross-section in the
Text Appearing After Image:
Fig. 1. Plan and pictorial elevation of the Mt. Hamilton lava caves, showing the depression andInsect Cave, (after Oilier, 1963a) March, 1968 71 cave-roof. This may be true perhapsin a small area near the entrance, butmost of the polygonal cracks seen inthe cave are in the lining, behindwhich is normal layered lava (seeOilier, 1965) which does not havethe closely spaced polygonal jointstypical of dense and uniform basalt. Porndon Rubbish Cave Lava caves were originally conduitswithin solid lava through whichmore liquid lava flowed, and in someinstances the contents have done littlemore than pull away from the roofof the tube they were filling. This isdemonstrated to perfection at PorndonRubbish Cave. At the entrance thefloor is slightly convex and cracked,but 18 feet below the roof. Within thecave the roof and floor converge, andgradually the floors curvature comesto match that of the roof, until theymeet at a common boundary, whichis the edge of the original lava conduit.This is show

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