714 
the Societies in Ulm, Cassel and Marburg; M. Henri de 
Saussure ; the Royal Institute at Luxembourg ; the Obser- 
vatories at Oxford, Bruxelles and Cincinnati; the Geological 
Commercial Society at Bordeaux; the Geographical and 
Meteorological Societies, Victoria Institute and London Na- 
ture; the Royal Society at Edinburgh; the Royal Geologi- 
eal Society at Dublin; the Boston Natural History Society ; 
American Antiquarian Society ; Prof. James Hall; Penn- 
sylvania Magazine of History and Biography; Mr. M. Russell 
Thayet of Philadelphia; Mr. HE. A. Barber and Prof. J. J. 
Sylvester of Baltimore. . 
Mr. Lesley read extracts from a letter from Prof. E. Desor, 
of Neufchitel, respecting the discovery of “pierres a 
écuilles,’ or rocks with cup sculptures, in the vicinity of 
Lyons, in Dauphiné, Thuringen, the Altmarck, Pomera- 
nia, Mecklenburg, Hanover, Bohemia, and Lower Aus- 
tria. 
“Tn Sweden where they go by the name of A/fenstenar 
people at this day carry to them all sorts of offerings and 
anoint them with lard against diseases (smorja sten for 
sjukdom) (Siegthum). 
“ But what is particularly interesting is the discovery re- 
cently made of similar cups on the walls of the old churches 
of Northern Germany, even when the walls are built of 
bricks, as is the case on three of the old churches of Greifs- 
wald.” [Sketches were shown of several brick courses with 
groups of cups.*] “It is another instance of that habit of 
the Christian apostles to borrow all sorts of practices from 
heathendom and apply them to their own cultus.” 
Mr. Franklin Platt communicated a section of the Pale- 
5 A ° . 3 ' 
ozoic rocks of Blair Co., Pa., measured and compiled during 
the last season’s work of the Geological Survey, by Mr. 
Sanders. 
Prof. Frazer described pot holes and Indian cup sculpture 
on the shore and island rocks of the Susquehanna River ; 
and Dr. LeConte described the pot holes produced by wave 
movements on the north shore of Lake Superior. 
* Napfehen and Rillen on the Churches of Griefswald, by Dr. Fiedel. 
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