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362 H. C. RUSSELL. 
much loss on the journey, although like the previous one from this 
locality it is much cracked, and many parts of the surface are 
ready to crumble away. All the parts together weigh seventy- — 
four pounds five ounces, and its specific gravity as a whole is 
3757. The No. 1 Gilgoin meteorite weighs sixty-seven pounds 
five ounces, and its specific gravity is 3°857. It seems probable 
from the fact that they were found so close together, that they 
originally formed parts of the same meteorite, and this view is 
strengthened by the similarity in outward appearance and in 
specific gravity. It is but right, however, to add that if so, they 
must have travelled through the atmosphere together a sufficient 
distance to cause the usual melted surface, which, although in 
parts lost by subsequent slow effect of oxidation, is yet too exten- 
sive to admit the alternative that they divided as they fell. . 
This recently found No. 2 Gilgoin meteorite is roughly double 
convex, and measures seven inches through the thickest part, and 
fourteen by fifteen inches diameter. The surface has been melted 
but is not so smooth nor glassy as others I have seen. When a 
part of it that has not been oxidized is broken, it is dark grey in 
colour, and shows a great abundance of fine bright white metallic 
particles. No analysis has yet been made. 
PICTORIAL RAIN MAPS. 
By H. C. RvssE tt, B.A., C.M.G., F.R.S. 
[With Plate XXI.] 
[Read before the Royal Society of N. S. Wales, November 1, 1898. } 
RAIN maps made with the object of presenting to the eye ina 
shape easily received, the results of volumes of figures, may be 
divided into three kinds. First, those in which varying shades or 
intensities of colour convey to the mind’s eye the amount of the 
rainfall in different parts of a country, or it may be of the whole 
