20G THK MINEKALS OF THE MIDLANDS. 



crystallised gypsum occur at Doder Hill. From the remarks of Nash 

 it would seem that the springs are impregnated from a body of rock 

 salt. 



"On the Chemical Geology of the Malvern Hills,"' by the Eev. 

 J. H. Timins, M.A. (Quar. Journ. Geo. Soc, vol. xxiii., p. 352). — 

 The paper contains numerous analyses of the rocks of the Malvern 

 Hills. 



The following rocks, containing minerals, are referred to among 

 others. The numbers correspond to the Roinan numerals in the original 

 paper : — 



1. — Lava, forming thick bed north of Coal Hill — contains hornblende 



and felspar indistinctly crystallised. 

 3. — Calcareous lava, with imperfectly crystallised hornblende and 

 minute red felspar crystals ; from the Valley of the White- 

 leaved Oak. 

 8. — Lava, from the footpath from Fowlett's Farm to the Valley ol 

 the White-leaved Oak — contains hydrated peroxide of iron in 

 vesicular cavities. 



23. — Fine-grained gi'eyish rock of the structure of sandstone, with 

 occasional thin lines of epidote, from a band in the Hollybush 

 sandstone on the east side of the eruptive rock quarried on the 

 south-west side of Midsummer Hill, passing into felspar. 



25. — Lava, bed west of Castle Morton Common-matrix of a bluish 

 colour ; cavities filled with epidote. 



37. — Bedded rock, south of the cave, near the footpath — contains a 

 few grains of olivine and a little quartz in cavities. 



57. — Fine-grained bed in diorito on the east slope of the North Hill — 

 small crystals of hornblende, white uncrystallised felspar 

 disseminated, and a little pyrites. 



59. — Diorite, south of the large quarry at North Malvern — black 

 hornblende, (juartz, and pink and pinkish white felspar, ot 

 which the cleavage resembles orthoclase, but the chemical 

 constitution is more nearly that of andesine. 



62. — Trap near the summit of the West Peak of the Eagged Stone 

 — dark bluish grey uncrystallised epidote in the interstices. 



68.— From a mass of trap immediately south of the cave, on the west 

 side of the ridge. — The fragment analysed was taken from the 

 part of it which is in the wood. It contains hornblende 

 labradorite, glassy felspar, and garnet. Some parts of this 

 mass of trap contain, in addition to the above, hypersthene. 



70. — From the east slope of the buttresses of the Hei'efordshire 

 Beacon, south of the deep ravine which divides the buttresses 

 from east to west, and overlooking a fann house at the extreme 

 end of Castle Morton Common — hornblende, labradorite, a 

 little glassy felspar, epidote, and hoBmatite. 



74. — From an irregular mass a quarter of a mile from the cave, and 

 to the north-east of it. — It contains hornblende, yellowish- 

 red orthoclase, and felspar, with the iridescent appearance of 

 labradorite. 



79. — Smooth amygdaloidal trap or lava, containing epidote in vesicu- 

 lar cavities, from the off-standing hill overlooking Little 

 Malvern. 



91. — From the more central portion of the large trap mass over- 

 looking Halley Mount — hornblende crystals, of which a few are 

 annular, and brownish uncrystallised felspar. 

 At the conclusion of the paper it was stated that "sulphate of 



baryta occurs in cavities and fissures, and as a cementing substance, 



