136 Miscellaneous Intelligence. 
oriron, The distinct separation and length of duration of the pre-his- 
torical periods of the so-called Stone period and Bronze period have no- 
whe in tl i 
mark and Mecklenberg. No settlements of the oldest men, among those 
known till now, can, in fact, be compared in size and preservation with 
the large lake-villages of the Stone period at Robenhausen, Wauwy! and 
Wangen, on Lake Constance,— Atheneum, May 27. 
4. On the Human Remains of the Trou du Frontal ; by P. J. Van 
Benepen and Dr, E. Duronr.—Remains of fourteen individuals have 
de Frontal. Of the two best crania, one is orthognathous, the other 
-cegmtgraabet and still the prognathous one has the largest cavity. 
he various other bones include fragments of crania and of nearly every” 
with them are bones of various mammals of kinds now living, besides 
different species of Helix, Cyclostoma and Unio, flint implements, orna- 
ments, amulets, coarse pottery, a crystal of fluor spar, a bone needle, ete. 
5. Instrument for measuring distances—Dr. Emsmayy, in a paper in 
Poggendorff’s Annalen, describes a new instrument for measuring dis- 
by Dr. Em 
eye-piece of 1” focal length, a screen of ground glass, upon which the 
me | 
image is receiy 
it will be seen, resembles in principle a ph ‘aphic camera; the len 
however, is about 5} feet. In order to keep the indications within cer- 
tain limits, the screen is placed behind the eye-piece, and the distance 
between the lenses is so arranged t iation i 
i him 
