Review of Recent Geological Literature. 255 
fossils were from the suburb known as Bridgeport.. "The whole mass 
of the rock is a congeries of organic remains, three-fourths of which 
are reduced to an unrecognizable condition, and many of which have 
been totally or partially dissolved out showing, in some instances the 
delicate tracery of the exterior, or complicated internal structure, in an 
extraordinary state of preservation." The authors detected 82 species, 
and McChesney had already described five others, making 87 from a 
single quarry. With the approval of Prof. Worthen, they refer the 
Bridgeport and the Racine limestones to the same horizon as the Le- 
claire, and they, (with him) make the whole a western representative of 
the Niagara limestone proper, the westward extension of the Canadian 
Guelph not at that time having been recognized, and not admitted by 
Hall. Nothwithsfanding a difference in fossil species-, there seems now 
but little doubt, from the striking lithologic similarity and from the 
recognition of similar characters in the Racine limestone of Wisconsin, 
that the Bridgeport limestone is a western phast of the Canadian 
Guelph, but probably belonging near the bottom of that formation, at a 
position where the desiccation had not progressed so far as to expel 
many of the Niagaran species. The comminution of the most of the 
fossils also implies the reef-like conditions which are characteristic of 
the Guelph. N. h. w. 
Geograplien-Kalcnder. Hermann Haack. . Gotha, Justus Perthes, 1903. 
This catalogue contains a kalendarium for 1903 and 1904, with an 
astronomical Anhang, by Paul Lehmann ; Weltbegebenheiten, 1902, by 
Paul Langhans ; Geogr. Forschungreisen, 1902, by Hugo Wichmann ; 
Geographische Literatur, 1902, by Wilhelm Blankenburg; Bericht fiber 
die Schul-geographie, 1902, by Dr. Haack; Die Toten, 1902, by Dr. 
Haack; Statische Mitteilungen fiber alle Lander der Erde, by Dr. 
Haack; Geographisches Addressbuch, by Drs. Haach and Wichmann; 
Anzeigen, and Kartenbeilagen, by Drs. Haack, and Langhans. These 
charts inclde late maps of Siam ; the railroad from Swakopmund to 
Windhuk ; South Africa ; the journey of Prince Henry in the United 
States ; earthquakes and volcanoes in the region of the Caribbean sea ; 
Central America in the region of the proposed canal ; Venezuela and 
the European blockade; Region of the Peru-Bolivia disturbance; The 
new telegraph-cable in the Pacific ocean ; ; The expeditions of Sverdrup, 
Peary and Toll to the arctic regions ; Sketch map of south polar expe- 
ditions ; SVen Hedin's exploration in Thibet; Sarasin's route across Ce- 
lebes; Pavel and Hosemann's journeys in Kamerun ; Routes of Erlan- 
ger, Wickenburg and De Bozas in eastern Africa; Tyrrell's examination 
of the '"Barr.n Grounds" west of Hudson's bay. n. h. w. 
