ABSTRACT OF PROCEEDINGS. xlvii. 



centric waves or rings with transverse furrows in the direction of 

 the thinner end of the meteorite — the waves and furrows gradually- 

 fade away in this direction. I think that these waves and furrows 

 clearly show that the meteorite travelled through the earth's 

 atmosphere with the thick end in front, the waves of fused oxide 

 being thrown up by the resistance of the air, just as waves are 

 formed in sand by the wind. That the meteorite did travel with 

 the thick end first is confirmed by the fact that at the thin end 

 there are longitudinal ridges and furrows in the fused skin which 

 clearly show where the excess of fused oxide was dragged off; the 

 luminous streak usually seen behind a meteorite is, if not wholly, 

 certainly in part, due to the fused incandescence left in its trail. 

 Hence the waves and other markings in the skin not only show 

 the direction in which the meteorite travelled but also its position, 

 i.e., with the curved point of the thin end downwards as repre- 

 sented in the photograph ; for the fused oxides forming the skin 

 are thickest on the lower side. 



Sections — These were made by permission of Prof. Warren, by 

 a steam hack-saw in the Engineering Department of the 

 University. The sections were polished and etched with copper 

 sulphate and with bromine ; the latter yielded the best surfaces. 

 The crystalline structure is well defined, and it is noticeable that 

 the groups of crystals all intersect at about the same angle and 

 pass across from side to side and some from end to end of the 

 meteorite. One or two small specks of troilite are to be seen, and 

 at the thick end are to be seen two well marked cracks which pass 

 out also through the crust. The crystalline structure is quite 

 distinct from that of any of the Australian and other meteorites 

 that have come under my notice. 



5. " On a new aromatic Aldehyde occurring in Eucalyptus oils," 



by Henry G. Smith, f.c.s., Assistant Curator, Technological 



Museum, Sydney. 



In this paper the author records the results of his investigation 



(so far as he has gone) on the aldehyde occurring in so many 



Eucalyptus oils, and which had for a long time been supposed to 



