"J'W! 'I'lii Anil rnui II ( i i nJn<i'isi . Octob.-r, Irttl 
niitl Micliinaii. :it hi<>iits lioui 170 t<» 2ttr> lec4 abovi' the level of 
llie hikes and strait. Proceetllno; thence about forty miles south- 
westward to Pctoskcy. the highest of these beaches gradually 
declines to aliout 1(MI feet, having a grailient of 2^ feet per mile: 
lull lieyond I'ctoskey it falls only six inches })er mile. Higher 
shore lines are found on the niainhmd. lint not on this island, 
which attains an altitudi' of aliout !»(I0 feet. 
Stria <nnJ Sh'r/iensidrs nt A/fnii. Jlliiiois. By ,1. K. ToDD. 
Descriptions of superlicial stri;e. and of slickensided rocks 
exposed by (juarryiiig. 'I'he two were regarded by the speaker 
as of similar origin, and therefore not indicative of ice action; 
))ut Prof. Salisbury and Mr. Leverett. who had also seen these 
striie. confidently regard them as glacial nuirks. They are situ- 
ated within the drift-bearing area, near its boundary. 
(lEol.iMilC.M, SoriKTV OK A.MKUIC.V. 
<hi the fjniitrniii n/ c/imif/is of hrrJ in Scaiiilinaiia. By 
Haron (Jkr.\k1) i)K (Jkkr, of Stockholm, Sweden. Fossiliferous 
marine beds and former shore lines, overlying the till, occur in 
Sweden and Norway, increasing in hight toward the interior of 
the country. The greatest elevation at which they have Ijeen 
found is HOI) feet, and a continuation of their gradient to the 
axial area of the Scandinavian ice-sheet would imply a maximum 
depression of the land there to a depth of fully 1.000 feet. At 
the time of this occupancy of the lower portions of the countr}' 
liy the sea. not more than one two-lumdredth part of the ice re- 
mainetl still unmelted. In places shallow straits stretched across 
southern Sweden, V)ut the enlarged Baltic sea on the east side of 
this jieninsula was only brackish, lacking much of the saltuess of 
the ocean. After this submergence, the land was uplifted some- 
what higher than now, perhaps as much as 100 feet; and the cli- 
mate or at least the temperature of the sea was warmer than now, 
as is shown l)y southern species of shells in the kjokken-m()d- 
dings. Another de})ression of the land ensued during the early 
part of the Xeolithic age. when t licit.' was a marine submergence 
to the extent of 10(1 feet at Stockholm and about 200 feet in some 
other parts of southeastern Sweden. The first and greater de- 
pression closely attended the latest glaciation. and in some places 
reacluMl its maxinnim after the retreat of the ice: and the second 
