Dr. Walter Flight — History of Meteorites. 597 



According to Bertolio this meteorite consists of: 



Iron 20700 



Nickel oxide 5-371 



Manganese and copper traces 



Sulphur 0-503 



Phosphoric acid 0-597 



Chlorine 0-105 



Silicic acid 39-661 



Alumina 0-415 



Chromium sesquioxide 0'036 



Iron protoxide ... ... 12-234 



Magnesia 14-776 



Lime 0-878 



Potash and soda 4-151 



99-427 



A second stone, weighing 6-311 kilog., fell in a cornfield near the 

 farm Boletta at a spot 2350 metres distant from the first. In form 

 it somewhat resembles a truncated pyramid, and measures 0-223 

 metre in its greatest length and - 14 metre in its greatest breadth; 

 it also is covered with a thin crust, evidently the result of fusion. 

 It is preserved in the Natural History Museum of the University 

 of Turin. The authors of the paper above alluded to consider the 

 two Villanova stones to be distinct meteorites, and not fragments 

 resulting from the explosion of a single mass during its passage 

 through our atmosphere ; their opinion is shared by Denza. 



At the same time a meteorite fell at Motta dei Conti, the village 

 already referred to. It struck . the pavement in front of a tavern 

 with great violence, driving the slab 0'5 cm. into the ground, and 

 the shattered fragments rebounded over the roof of a small dwelling 

 7 metres high ; their united weight is estimated to have been from 

 300 to 500 grammes. According to the list of the specimens, 

 quoted by Jervis as preserved in collections, their total weight does 

 not exceed 30 grammes. Bertolio, who submitted a small portion of 

 the Motta dei Conti stone to examination, declares it to differ both in 

 physical characters and chemical composition from the Villanova 

 meteorites : the disparity, however, is not difficult to account for. 

 He finds this stone to be more magnetic and dense (specific gravity 

 = 3-76) than the others, and to contain no lime and scarcely a trace 

 of alumina. A fragment of a meteorite, containing nearly one 

 quarter of its weight of nickel-iron would, during the rough treat- 

 ment to which this stone was subjected, lose much of the interstitial 

 rocky matter and acquire a greater density in consequence, while the 

 proportion of the two oxides in the Villanova is in any case so small 

 that the indications they may give in a qualitative examination of 

 so small a quantity of material could hardly warrant our drawing 

 a conclusion as to whether or no it had a common origin with, or 

 similar constitution to, the Villanova stones. All the remaining 

 ingredients of the latter are likewise found in the Motta dei Conti 

 meteorite. It is stated that a fourth stone fell further north in the 

 water of the Boggia Marcova, in the parish of Caresana. 



Daubree points out that the above meteorites do not essentially 



