in; Pretfiit*. [Feb. 15, 



V. Chemical Relationship to other Meteoric Stones. 



For the olivinic silicate, the ratio of the oxygen in combination 

 with the iron and manganese to that in combination with the mag- 

 nesium and calcinm is I : 2*9 ; in this respect the Makariwa stone 

 resembles those of Gopalpnr (1 : 2*75) ; Mezo-Madaras and Eich- 

 Btadt (1 : 2-8) ; Montrejeau and Pultnsk (1 : 2'9) ; Borkot and 

 Chantonnay (1 : 3). 



For the enstatitic silicate, the corresponding ratio is 1 : 2*7. This 

 approximates to those of Eichstadt (1 : 2*2) ; Manegaum, Waconda, 

 and Tjabe" (1 : 2 ! 3) ; Seres (1 : 2' 4) ; Georgia and Montrejeau 

 ( 1 : 2-5) ; Grosnaja (1 : 2'6) ; Utrecht (1 : 27) ; Ski (1 : 2'8) ; Borkut 

 (1 : 3). 



Of the above meteoric stones, that which stands nearest in this 

 respect for both silicates is Montrejeau; other stones approximating 

 to Makariwa in both ratios are Borkut, Eichstadt, Tjabe, Utrecht, 

 and Linn County. 



In the proportion of the olivine to the enstatiie, there is also a 

 close similarity: in Makariwa the proportion is 56 : 44 ; in Mon- 

 tn'jeau, 54 : 46. 



The proportion of nickel (18 21 per cent.) in the alloy is higher 

 than the average, and approximates to that of Middlesbrough (23 

 per cent.). 



Presents, February 15, 1894. 

 Transactions. 



Cambridge, Mass. : Harvard University. Bulletin. Vol. VII. 

 No. 5. 8vo. Cambridge 1894. The University. 



Copenhagen : Danish Biological Station. Report. 1893. 8vo. 

 Copenhagen 1893. The Station. 



Cracow : Academie des Sciences. Bulletin International. De- 

 cembre, 1893. 8vo. Cracovie. The Academy. 



International : Congres International de Zoologie. 2eme Session, 

 Moscou, 1892. Partie 2. 8vo. Moscow 1893. 



Societe Imp. des Amis des Sciences Naturelles, Moscow. 



Kazan: Imperial University. Scientific Notes. 1894. No. 1. 

 [-Rtwwan.] 8vo. Kazan. The University. 



Kew: Royal Gardens. Bulletin of Miscellaneous Information. 

 1894. No. 86. 8vo. London. The Director. 



London : British Association for the Advancement of Science. 

 Index to the Reports and Transactions from 1861 to 1890 in- 

 clusive. 8vo. London 1898. The Association. 



' Die Chemiiche Natur der Meteoriten,' TOD C. F. Rammelaberg. Berlin, 1879. 





