Geology and Mrheralogy. 469 
still horizontal Cave sandstone and associated beds. The lower 
Karoo erence probably thin a sited northward beneath the 
others. w the Karoo sandstones, and dying out southward 
near the Comtsebes (Professor Green}, are the Shales (7*), which 
constitute the country aroun imberley, des —— . as the 
‘ 7 . 
‘die out northward against the old sae of Griqualand: W est and 
t aal. They contain Glacial conglomerates in their 
lowest (earliest) beds, in Griqualand- West s just as the Ecca series 
as its great Glacial conglomerate (the Dwyka Conglomerate in 
the Olive or Kimberley shales (7*) in the Cosas -Free-State, the 
“a s 3: 
mains, and some coal on the Vaal; the Aaroo sandstones are 
rich with Dicynodont and other reptilian bones, and have some 
sh remains; and their upper portion (Stormberg) contains 
bf 
coal, A 
mammal also has been found in this series. ep ca its range 
the Aaroo Series is traversed with igneous d 
Limestones and sandstones (9) with foal “of nearly pure 
Jurassic, but with some of Cretaceous type, occur unconformably 
in the Eastern province. Their fossil flora is like that of the 
a 
coast; and Tertiary and post-Tertiary a s (11) from sev- 
eral patahas on ibe east, ne and west co 
8. Miniature domes in Sand.—Myr. T. Mella rd cas in the 
Geological Magazine for tot last, describes domes 8 of sand 
3 wane across nd an inch high, on on ies ,on a 
and 
to 10 feet off, along the clay forcing the interstitial air upward 
into a flat bubble and raising the sand above. Mr. Reade states 
that on trial he found that a bottle holding 7 ounces of perfectly 
ry sand well shaken together would hold in its interstices 2 
ounces of eam — ratio of sand to water in bulk being, there- 
si about 7t 
pete on Ore Deposits; by J. ARrHUR PHILLIPs. 
pp. By0, with numerous illustrations. London, 1884, — 
Co.)—The author of the well known Manual of Metallurgy, pre- 
sa in this new work a ase account of the various pel and 
modes of occurrence and associations, of ore deposits, a review of 
theories as to the formation of mineral veins, and 2 ‘ial deserip- 
tions of the principal mining regions o the worl compre- 
none in the se tb language of more recent date than Professor 
Frederick Prime’s translation of the volume by Von Cotta. e 
work fulfills er its purpose both as an elementary and descriptive 
treatise. The part on the mines of the United States and Mexico 
