46 Obituary— Hilary Bauerman. 
are described in detail. These consist of round and oval cavities and 
bodies, the largest of which are about 6 millimetres in greatest width. 
Nothing can be proved regarding their origin, but the description of 
the rocks is summarized and a hypothesis adopted regarding their 
history, as follows :— 
(1) The tourmaline-corundum rocks of Kinta consist of varying 
amounts of tourmaline, corundum, carbon, white mica, spinel, and 
other minerals. 
(2) They contain cavities about 6 millimetres in greatest width, 
generally bordered by a layer of corundum grains, with tourmaline 
grains on the inside of this border. Sometimes solid bodies similar 
in size and shape to the cavities occur. They are composed of tour- 
maline and corundum, the former mineral, generally speaking, being 
more abundant towards the centre. Such bodies also show concentric 
structure. 
(3) Smaller bodies occur, sometimes, but not always, accompanied 
by the larger cavities and bodies. They consist of tourmaline, of 
corundum, and of tourmaline and corundum. When both minerals are 
present, the corundum forms a shell to a nucleus of tourmaline. The 
corundum bodies frequently show concentric structure. 
(4) The tourmaline-corundum rocks are associated with other rocks, 
which lead to the conclusion that the structures described in (2) and 
(3) are the result of replacement of the materials of pre-existing 
bodies at the time of extensive granitic intrusions. 
(5) They also are associated with rocks which point to the original 
beds having been laid down under conditions similar to those that 
obtained when the Pahang Chert Series was deposited. 
(6) As tourmaline-bearing partings in the limestone at Changkat 
Pari constitute a case of selective metamorphism, so it is thought that 
the tourmaline-corundum rocks as a whole mark a process of selective 
and intense metamorphism in beds associated with schists overlying 
the Kinta Limestone. 
(7) These beds were probably chert and silicified limestone, both 
being in many cases carbonaceous. 
8) The larger cavities and bodies mentioned in (2) are believed to 
be the result of replacement or partial replacement of oolitic grains. 
(9) The smaller bodies may be, in part, the result of replacement 
of the materials forming casts of radiolarian structures; in part, the 
result of the further development or replacement of spots seen in soft 
partings in the limestone at Changkat Pari; and in part, the result 
of the replacement of small oolitic ‘grains. 
OS Peer ASueye 
—. 
HILARY BAUERMAN, 
Assoc. M. Inst.C.E., Assoc. R.S.M., F.G.S. 
Born 1833. Diep DrcempBerr 5, 1909. 
Tux closing days of the old year have gathered in another prominent 
geologist and fellow-worker to his well- earned rest, leaving our science 
the poorer, and ourselves to regret his loss. Of Hilary Bauerman’s 
