30. Preliminary Note on the Origin of Meteorites.) 
By L. L. Fermor, D.Sc., A.R.S.M., F.G.S. 
(With Plate X XVII). 
I.—IntRopvction. 
As a corollary to an investigation into the conditions of 
formation of garnets in the earth’s crust, I have been le 
of garnets, and secondly the origin of meteorites. 
In a paper in the Records of the Geological Survey of India, 
Vol. XLIT, pp. 208-230 (1912), I have dis- 
cussed the systematic position of a series 
Norms and modes. e 
of rocks known as the kodurite series? and found in the Vizaga- 
of the rock, in contradistinction to its mode or actual method 
of crystallization; as the sequel indicates, this conception of 
rm is of considerable value. 
Now typical kodurite is composed of orthoclase felspar, a 
mang own as spandite, and apatite. rm 
of this rock shows orthoclase, leucite, and apatite, and in the 
place of the garnet no less than five minerals, namely anorthite, 
hedenbergite, wollastonite, tephroite, and magnetite. This 

! Published with the permission of the Director, Geological Survey of 
India. 
2 Memoirs G.S.I., XXXVII, Chaps. XII & XIII (1909). 
