Geology and Mineralogy. 73 



Azoic or Arch^ian System. 



Michigan Geological Survey. IT. S. Geological Survey. 



Cascade Formation. Fundamental Complex. 



Republic Formation. ) T ,, . . ■ 



,, v , p .. \ Lower Marquette Series. 



Mesnard r ormation. J ^ 



Holvoke Formation. ) . 



Negaunee Formation. [ Upper Marquette Series. 



Office of the State Geological Survey, Michigan Mining School, 

 Houghton, Michigan. October 20th, 1892. 



5. Geological and Natural History Survey of Minnesota, 

 Annual Report for 1890, N. H. Winchell, State Geologist. 

 255 pp. 8vo. Minneapolis, 1892. — This report consists of a trans- 

 lation of a memoir by Boricky on the Micro-chemical examina- 

 tion of minerals and rocks (80 pages), and of a paper by J. H. 

 Kloos on Geognostic and Geographical observations in Minne- 

 sota ; also a chemical report by J. A. Dodge ; a report on the 

 woods of Minnesota by H. B. Ayres; on the petrography of the 

 Akeley Lake region by W. S. Bayley ; and on the Lamellibranchs 

 of the Lower Silurian by E. O. Ulrich. 



6. Final Report of the Pennsylvania Geological Survey, by 

 the State Geologist, Prof. Lesley, vol. ii, pp. V2L-1628, 8vo. 

 Harrisburg, 1892. — The second volume of this very convenient 

 Summary Description of the Geology of Pennsylvania, treats of 

 the Upper Silurian and Devonian formations, and is illustrated 

 by maps, sections, and many figures of fossils. 



7. Arkansas Geological Survey. Annual Report for 1891, 

 Vol. I, 144 pp. 8vo. Little Rock,' 1892. — This small volume by 

 Prof. Branner treats of the mineral waters of Arkansas. 



8. Geological Map of Baltimore and its Vicinity. Pub- 

 lished by the Johns Hopkins University. — This map is based 

 mainly on materials belonging to the U. S. Geological Survey and 

 especially for the outlines of the sedimentary formations, on the 

 woi-k of N. H. Darton. It has been prepared by Prof. George 

 H. Williams, who has shown excellent judgment in the selection 

 of colors and in the various details. It is a beautiful and highly 

 instructive map. 



9. Devonian Fishes of Canada. — A. S. Woodward describes, 

 in the Geological Magazine for January and November, 1892, 

 and illustrates by figures, Lower Devonian fishes from Campbell- 

 ton, New Brunswick. The species pertain to the genera Protodus, 

 Diplodus, Gyracanthus, Climatius and Acanthodes among Elas- 

 mobranchs ; Cephalaspis • and the Dipnoan genus Phlyctwnaspis 

 of Traquair. Two of the species had been previously described 

 by Traquair and two others by Whiteaves. The author also de- 

 scribes, in the November number, Upper Devonian species, from 

 Scaumenac Bay of the genera Diplacanthus and Coccosteus, 

 with remarks on certain plates of a Bothriolepis of the same 

 locality. 



