April 19, 1894J 



NA TURE 



593 



strong and well-marked current up the eastern coast, passing 

 between the Manitun Islands and the Michigan mainland, and 

 ending in the reefs and rocks to the north of Little Traverse Bay. 

 There Is a current down the west coast, but at some distance off- 

 shore. In the ?pace between its margin and the shore there are 

 varying currents, sometimes to the northward and sometimes to 

 the southward — on the whole rather from the south than from the 

 north. There is a great but gentler whirl about Beaver Island 

 in a direction contrary to the hands of a watch. The velocities 

 found in these currents are greater than those found in Lake 

 Superior, and this is especially true of the northern end of the 

 current, which passes up along the east coast. In the case of 

 the bottles which crossed Lake Michigan, the velocities obtained 

 in the best cases varied from four to four and a half miles a day. 

 Taking only the bottles which passed between Maniton Islands 

 and the mainland, the velocities obtained varied from six and a 

 half to ten a day. 



developed at no great distance from the south coast, and much 

 farther from the north coast, which is cut by two long points 

 extending out to about one-third of its width. 



Lake Ontario. 



In Lake Ontario 56 bottles were recovered, of which 55 

 belonged to the season of 1892, and one to that of 1893. The 

 directions taken by the bottles in the lake are somewhat similar 

 to those in Lake Erie, but quite distinct from those of the upper 

 lakes. There is a general current extending diagonally across 

 the lake from opposite the mouth of Niagara River to the out- 

 let near Kingston. The bottles exhibiieJ a strong tendency 

 to seek the east coist, passing down into the bay on which 

 Sacketts Harbour, N.Y. , is situated. There are evidences of 

 a whirl in the western end of the lake, west of the meridian of 

 Toronto. 



The general conclusions of the paper relate only to the 



Sheboygan 



Lake Michigan 



Chicago <\ V 



^ />^-^^$^a//e Erie 



^ ^^^ ^__ ^, Ashtabula 

 yA\^<^ _^^^Y^ Fairpoft 



~ ' Cleveland 



Sandusky 



ll'alkir Sr Boidall sc. 



Lake Huron. 



In this lake 186 bottles were recovered, 142 for the season of 

 1892, and forty-four for 1893. From the courses of the bottles, 

 it is concluded that the arrangements of currents is very much 

 like that of Lake Michigan. In this case, however, it seems 

 that the main current is along the west coast, while in Lake 

 Michigan it is along the east coast. It is found that in Lake 

 Huron therein; a strong current passing down the west coa^t and 

 some little distance out, the whole length of the lake, turning 

 on itself near the point of the lake, and passing up the east 

 coast, possibly turning again along the north shore and rejoin- 

 ing the other current in the vicinity of Bois Blanc Island. A 

 branch of this return extends into Georgian Bay. 



Lake Erie. 



The "number of bottles recovered in Lake Erie was 96, of 

 which 66 belonged to the season of 1892, and 30 to 1893. The 

 general course of these bottles was eastward along the axis of 

 the lake, with a tendency from point to point toward the coast. 

 The indications are that the main current along the axis is best 



NO. 1277, VOL. 49] 



greater currents of the lakes. These currents must be sub- 

 stantially as indicated by the five or six hundred bottle-papers 

 which have been recovered. There will, however, be some 

 modifications due to season and direction of wind, but these 

 modifications will be superficial, while the regular currents of 

 the Great Lakes, which are described above, must be fairly 

 persistent. Many of the modifications will be found in the 

 bays and at the extreme angles of the lakes, and these remain 

 for further investigation. 



SCIENTIFIC SERIALS. 



^ V Anthropologie, tome v. No. I, January-February. —M, 

 Emile Cartailhac contributes certain new facts with regard to 

 the prehistoric history of the Pyrenees ; in the present number 

 he describes some quattzites of the St. Acheul type that have 

 been recently found in the cave of Herm (Ariege). The examin- 

 ation of the animal remains was confided to M. Marce'lin Boule 

 who communicates a short note on the remains of the Glutton 

 {Gulo luscus) and the Cave Lion {Fehs spelaa) which were found 



