1869.] Mineralogy. 453 



fessor's own words — " as if it had been shattered by striking when 

 in a semi-fused state, against a rock, at the time of its fall." A 

 description is also given of another meteoric iron, now in the St. 

 Louis Academy of Sciences ; and an analysis is piibhshed of the 

 Losttown meteorite, previously noticed in this journal.* We have 

 only space to give the percentages of the chief constituents in each 

 specimen : — 



Auburn. St. Louis. Losttown. 



Iron .. .. 94-580 .... 92-096 .... 95-759 

 Nickel.. .. 3-015 .... 2-604 .... 3-660 



When a polished section of meteoric iron is etched with an acid, 

 it is well known that a peculiar crystalline structure is usually 

 developed. The markings thus j)roduced are known, after their 

 disco'^erer, as the Widmannstatten figures. Dr. J. Lawrence Smith 

 has recently found that certain meteorites from Trenton, Washing- 

 ton Co., Wisconsin, exhibit on similar treatment a distinct set of 

 markings, different from those of Widmannstatten ; and as his atten- 

 tion was first directed to them by a Mr. Lapham, he proposes to 

 distinguish them as the Lapliamite figures. The meteorites exhi- 

 biting these figures contained 91 '03 per cent, of iron, and 7*2 of 

 nickel, t 



What is really the formula of that curiously-constituted mineral, 

 Hailyne ? On collecting the published analyses, it will be found 

 difficult to reconcile their discrepancies. Dr. Kenngott has recently 

 found that sulphate of soda may be obtained by the action of water 

 on haiiyne, and hence he believes that some of the recorded analyses 

 have been made on specimens partially altered in tliis manner. 

 Allowing for such an action, he regards the unchanged mineral to 

 be constituted according to the following formula,^ which indeed 

 agrees with that deduced from Whitney's analysis of the Alban 

 haiiyne, namely : — 



3{(Na2 . Alo)0, . 2SiO,} +2(GaO . SO3). 



Fm'ther contributions to the mineralogy of Nova Scotia have 

 been published by Dr. How.§ Among these will be found notices 

 of a carboniferous lignite, from Pictou Co., and of the species Turgite, 

 Delessite, and Fahlunite. A new locality is given for the interesting 

 Acadian mineral described in a former number of this Journal under 

 How's name of Silicoborocalcite, |j but which has since been appro- 

 priately named HoivUte. 



In compliment to the well-known Itahan geologist, Quintino 



* Vol. vi., p. 134. 



f 'Silliman's Journal,' xlvii., p. 271. 



X Leonhard und Broim's Jahrbuch fiir Mincralogic. 1869, Heft 3, p. 329. 



§ 'Phil. Mag.,' April, 18G9, p. 264. 



II Vol. v., p. 259. 



