Conklin—Preliminary Report on a Collection of Hepaticae. 985 
PRELIMINARY REPORT ON A COLLECTION OF HEPA¬ 
TICAE FROM THE DULUTH-SUPERIOR DISTRICT. 
STATES OF MINNESOTA AND WISCONSIN. 
Gteoege H. Conklin, M. D. 
The specimens in this report, were collected within the terri¬ 
tory which will hereafter be designated, the Duluth-Superior 
District. This District is confined by a circle with the Twin 
Ports, Duluth and Superior as the centre, and the distance of 
fifty miles more or less as a radius. Such a territory would in¬ 
clude a part of St. Louis County along the lake shore in Min¬ 
nesota and the whole of Douglas County, Wisconsin. The north¬ 
east corner of Carlton County, Minnesota, where the St. Louis 
Diver enters the dalles near the villages of Thompson and Carl¬ 
ton, and the vicinity of Lutsen, Cook County, Minnesota, one 
hundred miles down the north shore, are also included. The 
St. Louis River divides the District so that the two states of 
Wisconsin and Minnesota are about equally represented, and so 
far as observed the hepatic flora is very similar in the states of 
the District if similar habitat be chosen in collecting. 
The immediate topography of the two cities, however, is very 
dissimilar. Duluth, Minn., is situated on the ISTorth Shore 
Range of Lake Superior. This range extends from Carlton* 
Minn., on the southwest to the extreme northeast international 
boundary. This highland parallels the lake shore, and has an 
altitude varying from 1000 to 1500 feet above sea level. As 
Lake Superior is 600 feet above the sea, the ran<re rises from 
400 to 900 feet above the lake. This altitude is obtained within 
a few miles from the lake shore. In places there are bold out¬ 
croppings of rock and ledges. In other places the rise is more 
