1092 - General Notes. [ November, 
glaciated hemisphere. As it is very difficult to conceive that the 
earth had at any former period a lower initial temperature, or that 
the sun possessed less heating power, glaciation in the north 
could never have depended upon the conditions argued in Dr. 
Croll’s theory. The author suggested that glaciation within lati- 
tudes between 40° and 60° was probably at all periods a local 
phenomenon depending upon the direction taken by aérial and 
oceanic currents, as, for instance, Greenland is at present glaciated. 
Norway has a mild climate in the same latitude, the one being 
situated in the predominating northern Atlantic currents, the 
other in the southern. Certain physical changes suggested in 
the distribution of land would reverse these conditions and ren- 
der Greenland the warmer climate, Norway the colder. 
OCCURRENCE OF A DEEP-SEA FoRAMINIFER IN AUSTRALIAN M10: 
CENE Rocks.—At the meeting of the Royal Society of South 
Australia, on June 2, Mr. W. Howchin, F.G.S., exhibited a speci- 
men of Astrorhiza angulosa as a fossil found in the Miocene 
strata of Victoria. The specimen was stated to be of more than 
ordinary interest, inasmuch as it was the first instance in which 
the genus had been found in the fossil condition in the recent 
slate. The species submitted was very rare, having been hitherto 
known to occur only at two localities, one of these being at a 
Challenger station to the east of the Azores, at a depth of 1000 
fathoms, and the other at a point in the North Atlantic, dredged 
by the Porcupine, at 630 fathoms, where only a single specimen 
was taken. There are five species in the genus, but with the ex- 
ception of a single specimen of an allied species taken by the 
Challenger off the Cape of Good Hope, the genus is only known 
as a North Atlantic type. The species discovered in the’ Victorian 
rocks is one of the rarest ; its occurrence, therefore in the fossil 
condition in the Australian Tertiaries is a matter of some inter- 
est. The speaker stated that his researches with regard to the 
microzoa of the Australian formation led him to believe that 
-many of the rarer arenaceous forms of foraminifera recently dis- 
covered in the deep seas, and which have been so beautifully 
illustrated by Mr. H. B. Brady in the Scientific Results of the 
Challenger Expedition, occurred as fossils in Australian geology 
from the Cretaceous formation downwards.—English Mechanic. 
GEOLOGICAL News.—General—Prof. P. M. Duncan has con- 
