24 POMPECKJ. JURASSIC FAUNA OF CAPE FLORA. [norw. POL. exp. 



But if this be so, it follows that the plant-bed must have been lifted by 

 intrusive masses, and if not all, at any rate the lower horizontal tiers of the 

 basalt at Cape Flora must be intrusive. I have already above, pp. 15 and 17, 

 pointed out that there are almost decisive proofs that these basalt beds cannot 

 be intrusive. 



Koettlitz and I looked in vain for similar plant-bearing deposits below or 

 between the tiers of basalt in other places on Cape Flora. But since my 

 departure, Koettlitz has been fortunate enough to find what he supposes to 

 be the same plant-bearing bed in the cliffs above Windy Gully, on the oppo- 

 site side of the Cape Flora hill, (about two kilometres distant from the locality 

 mentioned above) and about 700 feet (210 m.) above sea-level (see fig. 1, T). 

 Although this bed was only from 18 inches (45 cm.) to 2 feet (60 cm.) in 

 thickness, it could be traced almost horizontally „for 500 to 600 yards between 

 the second and third tiers of the basalt" (counting from below) ^ If Koettlitz's 

 estimation of the height is correct, the second and third tiers must be lower 

 near Windy Gully than above Elmwood, where the top of the second tier is 

 about 880 feet above the sea. Koettlitz tells me „that a thick layer of tufa(?) un- 

 derlies this stratum, and it has all the appearance of being undisturbed". 

 Even though this plant-bed is probably of nearly the same age as the one 

 visited by Koettlitz and myself^, I do not consider it likely that they are 

 actually parts of the same bed, the rocks composing them seem to be too 

 dissimilar. According to communications from Koettlitz, the plant-bed above 

 Windy Gully is composed of a silicious rock, which Mr. Teall decribes as 

 „brown, laminated, silicious rock"^ (Si O2 91-4°/o, AI2 O3 and Fe2 Os 3-9%; 

 loss on ignition 2"4°/o. Another specimen he found to be Si O3 73*8, AI2 O3 

 and Fe2 O3 10"7; loss on ignition 12'3^/o). Portions of this stratum or bed 

 were „soft grey argillaceous rock" which „sticks to the tongue like bauxite". 

 The plant-remains seem to have been found in the first-named kind of rock^ 

 and this is evidently quite different from that of the bed from which Koettlitz 

 and I collected plant-fossils, this last being an argillaceous shale. 



A third place where Dr. Koettlitz tells me that he „found similar plant 

 fossils was upon the summit of the rocks of Cape Flora cliff, upon almost 



1 See Newton and Teall, 1. c. 1898, p. 649. 



2 L. c. 1898, p. 649. 



8 Cf. Newton and Teall's description 1. c. 1898, p. 649. 



