‘ 
a | General Notes. 
_ well drawn, and are much better than in Cooke’s “ British F 
ass II, —-CHLOROPHYCE, 
Order I1.—Confervoidea. Families.—5. Coleochztacez ; 
7. Spheropleacee; 8. Confervacez; 9. Pithophoracez. i 
baal Ill.—Stphonee. Fa as Hues Vaucheriacez ; 11. Botrydiaceæ. 
Order 1V.—Protococcoidee. Fami a Volvocaceze; 13. Protococe: 
te Palmellacez ; 15. Chytridie 
_ Order V. Fit sx eg, Families. eat Conjugate; 17. Desmidiex. 
Class 11].—CyANOPHYCE. 
Order VI. ae apipi —Families.—18. Nostocaceæ; 19, Chroococcace 
It will be observed that the “ families” are groups so 
in the German sense, and are really co-ordinate with the 1 
hamian “orders” of ‘ordinary phanerogamic botany. 
“ orders” of the book are, perhaps, equivalent to the “Coho 
of the higher plants as arranged by Bentham and Hooker. 
i A 
mon manuals of the eens plants, in which “ 
“family” are synonym 
pa e micromillimetre is used ae ase as the 
measurement. The plates, while not artistic, are, appar 
quite accurate. Some of them are a little too diagrammatic, ® 
for example, some of the Spirogyre. The Œdo onia are © 
Water Algæ. ae 
The author deserves the gratitude of American botanists 
bringing out this book and placing it within the reach of all, 
price being scarcely half of that of the corresponding 
work referred to above.— Charles E Bessey. 
GENERAL NOTES. 
GEOLOGY AND eg 
Sadick. of fossils from the classic bad lands of H jel 
regions of Dakota and Nebraska collected by Mr. 
* “ Preliminary Account of the Fossil Mammals from the ne we ie "5 
a in the Museum of Comparative Zodlogy, Cam bridges 
Museum, vol. xiii. No. 5, August, 1887. 
