24 THE CHICAGO ACADEMY OF SCIENCES. 
At Evanston, in the beach near The Northwestern Univer- 
sity, the following species have been collected by Prof. Oliver 
Marcy: 
Unio of various species. Physa heterostropha. 
Limnza palustris. Ancylus sp. 
Limnza caperata. Elimia livescens. 
Limnza reflexa. Pleurocera elevatum. 
Planorbis trivolvis. 
The fossils are sometimes found in clay and sometimes in 
carbonaceous earth. The following section* shows the general 
position of the strata in relation to the fossils: 
SECTION OF BEACH AT EVANSTON MADE IN 1864. 
FEET 
Ls Sourlace sor esate yiceren tourna einese va Su einer eu s Patermele 1% 
2. ee BEOWNISANG ANC MRE STAVE] ness 6 ocietisiee he below cei oes 2% 
DB. uCoarserigravel: sStratitedrs 200 vical cess odes ats eos 2% 
AOI CRSATICG er sm cn ciehochee Gia oir oe a score oaloly aepalsae wales crae tices @2 
0.) ‘Gravel; containing ‘bones Of deer... [5 22. o<-ieicisiels'» se & 1% 
6. ehine sand scontaming oak JOpS)- 5 eee. o clyeire ee siete oe ote 1% 
7. Peat or carbonaceous earth with a marl bed containing 
molluscan shells in the lower portion or interstratified 
WHEL ENe Deals: © sic: ates oye eles eyornsaete stoner nebo Bete eres 1% 
SN MGTAVE Ser iisrne cota ttedsiat ie the oie ee alee ae iets S escae ous tanatat 3 
9. Humus soil, with stumps and logs (coniferous)......... % 
10. Yellow clay, laminated and contorted, containing pock- < 
Sts iO Mera Vel ete corer stig ate, ci oka ane loyancolers a custo etoicasat Patan 3% 
11:, (BIne SpePDLVaClAay aa ache cece iGreen ater ciald eae Grace elt 2 
EXCISE: GE g UUM ioe oc ops nu aos aed = pew ep SB ae abe ae 22 
Mr. Carl Dilg has found a number of fossil shells in exca- 
vations for the foundations of flat buildings and has made 
collections at the corner of Wrightwood Avenue and Clark Street, 
corner of Frederick and Clark Streets, on Hall Street, corner 
Sheffield and Lincoln Avenues and on Balmoral Avenue south of 
Bowmanville. The genera found were Unio, Pleurocera and 
Elimia. 
It is probable that many additional species of fossil mol- 
lusks will be found when the area is more systematically sur- 
veyed for this purpose. 
*From Leverett, after Marcy, Pleistocene Features, p. 76. 
