72 Scientific Intelligence. 
Minerals Srom Kangerdluarsuk in Greenland.—A paper 
SS published by Dr. Lorenzen, of Copenhagen, contains. 
analyses and éryatallographio notes on paecial minerals from 
arcane suk in Greenland; an earlier paper a the same 
tals with arfvedsonite, sgirite, eudialyte, ete. Its color is yel- 
lowish brown when fresh, but the crystals are often altered so as 
to have an earthy structure and straw-yellow color. The hard- 
ness is 5, the specific gravity 3°46. The mean of several analyses. 
ielded : 
SiO, TiO, CeO Di0LaO YO FeO CaO NaO Fl 
‘eotiintnlnie jade ‘ 
29°08 13°36 21°25 0°92 044 23.26 8°98 5782 
=103°11, deduct 2°45 O = 100°66 
For this the formula proposed is 2RRO stNaFl, although the 
correctness of the formula is not fully established. The name 
Polylithionite is given toa es of lithia mica unusually riché 
in lithium. An analysis gave 
Si02 Al,0; FeO K,0 Na,O Li,0 Fl 
59°25 12°57 0°93 OT TUS Oe se Tse 
102°11, deduct 3:08 O = 99°08 
In optical relations this lithia mica stands very near zinnwaldite 
but is remarkable in containing more silica; this, the author states, 
cannot be due to impurity. 
19. Synopsis Mineralogica: Systematische aide ae des. 
Mineralreichs, papers von Dr. Astin WEIsB wei 
ee 87 pp. 8vo. Freiberg, 1884. (J. G. Rupsiiardt )—This 
ork contains a list of eal species with a statement of their 
era aa. and in most cases, the crystalline system to which 
they belong ; the system of Mlanieondie,3 is rather artificial. 
II. Borany anp Zoouoey. 
1, Comparative Anatomy of the Phanerogams and Ferns ; 
“by Dr. A. DeBary, Professor in the University of crema 
Translated and aatmtated by F. O. Bower, M.A., F.L.S., an 
D. H. Scott, M.A., Ph.D., F.L.S. (Clarendon Press, Oxford, 
1884; pp. 659. )—D eBary’ s ’ Vergleichende este has hg in 
the hands of students since 1877. It has been 
‘ made known to no 
few students, unfamiliar with German, the excellencies of 
eBary’s treatise. bocce what the present writer has se 
