BS 
14. Geognostiche Darstellung der Steinkohlen-formation in Sachsen mit 
besonderer Beriicksichtigung der Rothliegenden, von Hanns Bruno Get- 
454 Miscellaneous Intelligence. 
Leipzig, 1856. Verlag von Wilhelm Engelmann.—We recently noticed 
the beautiful work of Dr. Geinitz on the Fossil Plants of the Coal forma- 
tion of Saxony. In the work just issued, the author treats of the rocks 
and coal beds. He first describes the various known kinds of coal from 
lignite to anthracite and graphite and their modes of occurrence. Next 
he treats of the Coal formation of the Erzgebirg Basin; (1,) the Hai- 
nich-Ebersdorf Coal formation, or the Saxon culm-coal ; (2,) the produe- 
tive coal beds of the vicinity of Zwickau ; (3,) the Permian with the in- 
cluded eruptive rocks, overlying the coal measures of Zwickau; (4,) om 
up in a following chapter the anthracite region of the Upper Eragebirg. 
measures of the different regions, and many facts bearing on their origin 
and history. The Permian is shown to be essentially a part of the Palzo- 
zoic, related to the Carboniferous Period, rather than to the Triassic. 
15. Das normal Verhdltniss der chemischen und morphologischen Pro- 
portionen, von Avot¥ Zeisine. 112 pp. 8vo. Leipzig. Rudolf Weigel.— 
© Ged¢ yewmerget.—The idea of simple mathematical proportions in nature 
is exciting much attention and research. M. Zeising in this work endeavors 
4 rs 1:2:3:5:8:13:21: 384, ete. which are known 
to occur in the arrangement of the leaves of plants, through the human 
figure, animal and vegetable structure, physiology, musical harmony, the 
planetary system, the earth’s features, architecture and chemistry. And 
he further aims to reduce it to a still simpler form. 
He divides 1000 into two parts, in such a way that the Jarger is a 
mean between the smaller and the whole, which gives 1000: 61 8.0339 : 
381-9660. This series continued, by simple proportion, making the first 
to the second, as the second to the third, the third to the fourth and so on: 
—gives 1000 : 618-03... :381°96... : 236-06... : 145°89...: 90°16... 
the body (B), and of the upper (C), and states the ratio, A: B: C 
618°0:381°9. Again, for the ratio of the whole lower part (A), the upper 
Pi hie ages io A: B: C=6180 :3810% 
also for the upper part of the body (A), and its two parts 
the chest (B), and the hae (cy, the ratio re" ; C==381'9: 2360: 
145°9.—In music, the ratios 1:2: 3:5: 8, are given by the succession of ; 
tones C: C (octave): G:E:C (2nd octave).—1 : 2 is the octave; 2: 3the 
fifth ; 3:5 major sixth or minor third transposed; 5:8 minor sixth, oF 
