Dr. Walter Flight— History of Meteorites. 25 



The analyses of the rocky portion yielded the following results : — 

 SiO,. AU0 3 . FeO. MnO. MgO. CaO. Na 2 0. K 2 0. Chromite. 



A. Soluble ... 34-72 0-70 26-14 0-65 35-70 1-61 0-48 Trace — =100-00 

 B. Insoluble... 60-83 4'74 12-92 0-60 14-14 3-30 1-53 0-82 1-12 = 100-00 



The soluble siliceous portion, forming 45-94 per cent, of the non- 

 metallic part of the aerolite, consists of an olivine in which the 

 oxygen ratios of FeO and MgO are as 2:5. As in most analyses 

 of meteorites, where the separation of the silicate of the form 

 2EO,Si0 2 is attempted to be effected by means of acid, the silica in A, 

 the soluble portion, is insufficient to form an olivine. The silica of 



B, the insoluble portion, on the other hand, is not only present in 

 ample quantity, to make good what is wanting in A, and to supply 

 the silicates of the form RO,Si0 2 , but is in sufficient excess to lead 

 Baumhauer to assume the presence of a bisilicate in the insoluble 

 portion. If, however, the requisite amounts of silica be apportioned 

 to the protoxides of iron, manganese, magnesium, and calcium of A 

 and B, to form the respective silicates, there remain in the insoluble 

 portion the following constituents, the oxygen ratios of which, as 

 will be seen below, do not differ widely from those of an albite or 

 orthoclase : 



Si0 2 =5-326; A1 2 0=M3; K 2 O=0-16; Na 2 O=0-39. 

 Baumhauer traces a resemblance, in point of composition, between 

 the aerolites of Tjabe and Mezo-Madaraz (4th September, 1852), by 

 comparing his results with those published by Atkinson, 1 who 

 analysed the latter stone in Wohler's laboratory. About the time of 

 the publication of this paper of Baumhauer's (1871), Rammelsberg 2 

 announced the result (see infra) of his examination of the Mezo- 

 Madaraz stone, which differs very considerably from those arrived 

 at in the earlier analysis ; where, in the insoluble portion of the 

 Mezo-Madaraz stone, Atkinson found no iron protoxide, Bammelsberg 

 finds 13-27 per cent. It will suffice in this place to mention that 

 the later analysis of the Transylvanian aerolite does not indicate 

 the presence of an excess of silica, and yields numbers which point 

 to the presence of an olivine, like that found in the meteorites of 

 Hainholz (1856) and Shergotty (25th August, 1865), and of bronzite 

 resembling that occurring in the aerolite of Chantonnay (5th August, 

 1812). 



1869, October 6th, 11.40-45 a.m.— Stewart County, Georgia. 3 



When this stone fell, the sky was somewhat hazy, but there was 

 no cloud. An observer at Bladen's Creek heard a roaring rushing 

 sound in a north-westerly direction ; in a moment it appeared to be 

 directly westward ; then a loud explosion, followed by six other 

 reports, occurred. After these explosions a peculiar whizzing sound 

 was heard, produced apparently by some large irregular body 

 moving rapidly away, while a smaller one passed to the south-west 

 with such a noise as is caused by a flying fragment of a shell. 



1 E. Atkinson. Jour. Prakt. Chem., 1856, 357. Phil. Mag. xi. 141. 



2 C. Rammelsberg. Zeit. Beutsch. Geol. Gesellsch., 1871, 734. 



3 J. E. Willet and J. L. Smith. Amer. Jour. Sc. 1. 335, and 339. 



