152 PUBLICATIONS RECEIVED. 



masses, with an indistinctly crystallized surface, of alight greenish-blue colour. 

 H. 5.0 ; sp. gr. 2. TOT; infusible. The analysis yielded : silica, 26.0; lime, 1.55; 

 oxide_^of zinc, 66.9 ; water, 4.7 — with traces of copper and iron oxides. This 

 leads to the old formula 3 ZnO, SiO^ + HO [modernized into 3 (2 ZnO, SiO«) 

 + 2 HO] which only diflPers from the formula of electric calamine by a little less 

 water. Unless the crystallization be shewn to be really distinct, this substance 

 can scarcely be separated from the latter mineral. 



Dr. Genth's Contributions to Mineralogy. — In continuation of hi& investigations, 

 communicated, under the above title, to the American Journal of Science and 

 Jlrt, Dr. F. A, Genth has published a further and valuable series of observa- 

 tions on various American minerals. These comprise, more especially, Pseudo- 

 morphous gold after Aikinite (Needle ore), from Georgia (?) ; Antimonial Arsenic 

 from California ; the Lake Superior arsenides of copper, Whitneyite (with which, 

 it should be remembered, the so-called Darivinite of Forbes and Field is identi- 

 cal), Algodo7iite, and Domeykite ; Pseudomorphous copper glance after Galena (the 

 so-called Harrisite of Shepard) ; Millerite from the Gap mine, Lancaster county, 

 Pennsylvania ; Automolite from the Canton mine ; Pyrope from Santa F^, New 

 Mexico ; and other species. We regret that our limited space prevents us from 

 referring more fully, at present, to these trustworthy and very able investigations- 



E. J. 0. 



PUBLICATIONS RECEIVED. 



Malcolm's Genealogical Tree of the Royal Family of Great Britain. 

 This ingenious chart of the direct and collateral descendants of the founders 

 of Britain's Royal line, forms a tasteful and very appropriate addition to our 

 Canadian school-room apparatus. The foreground represents a specimen of as 

 rough a clearing as any of the newest of Canadian settlements could offer to the 

 artist's eye ; but the various stumps on more careful inspection are seen to be 

 the emblems of the Saxon Heptarchy, chopped down at the dates specified on 

 each, and superseded, so far as Saxon England is concerned, by the one vigorous 

 trunk of Egbert of Wessex. The roots of such trees being, we presume, 

 presumed to lie fairly out of sight, Egbert is stated to be the descendant of the 

 apochryphal Hengest and Horsa ; and alongside stands another robust trunk 

 springing from^Kenneth II. King of Scots ; who is stated under the date of 843 

 to have been " first king of all Scotland ;" — though if that means all that was 

 embraced in the Scotland of the Bruces and the Stuarts, it is an anachronism. 

 The third substantial tree begins with Rollo, Duke of Normandy, and his first 

 wife Popa, — by mistake here called Topa, — from whom proceeds William I. the 

 Conqueror ; though the intermediate Dukes of Normandy are represented in a 

 very maimed fashion, by three: "William," "Richard I," and then "Robert, 

 who died on pilgrimage." A complete and accurate genealogy of the succession 

 of the Dukes of Normandy would have been a useful addition to such a chart, 

 and should either be complete, or else omitted. The three distinct genealogical 

 trees, branching out, and frondent with leaves of oak, on which the various 

 descents and alliances are blazoned, are represented as intertwining and uniting 



