402 Miscellanies. 
3. Prof. Gao. Forcunammer, of Copenhagen, on new substances 
from the peat mosses.—We have received a letter from Prof. Forch- 
hammer, dated Oct. 6th, 1840, stating that he was about to send a pa- 
per for a Journal on some new compounds, which he has discov- 
mosses of Denmark. ‘They are Tekoretin = C* H°; 
Phyllorevin = C8 H*; Zyloretin — Ct? H®*® Of; and Baloretin 
= C+? H&4 +H1°05. The three first substances crystallize in beau- 
tiful white crystals; the last isa pulverulent body. It is partly want 
of time at this moment, partly because I have still some analyses to make 
on the compounds of Zyloretin with chlorine, which prevent me from 
sending the paper at present; but I hope soon to be able to send it.” 
Geology of Denmark.—*1 have just returned,” continues Prof. F. 
“ from a tour through the greatest part of Denmark, principally upon an 
baat a into the’nature of our bowlder formations. I have been able to 
trace | three periods in this vast formation. 1. The oldest contains fos- 
agreeing with the sub-Appenine formation of Dartona and several 
ashen aiscas in upper Italy. 2. Contains no fossils, is very seldom 
stratified, but consists of a yellow loam,and blue and yellow marls, with 
numerous bowlders of enormous size. 3. Contains the fossils of our 
present sea, in stratified gravel and howidave; very often hardly any 
thing but bowlders. 
“ The theory of the bowlders sabes earried by ice, area in form of 
glaciers or ice islands, does not appear to me to agree wit our forma- 
tion. Tam preparing a work on the oP penal ot 
wir ip hr hate AME PIRI oe Ge sda of sending } you, 
sncoT hay dane hope thatthe Danish will be understood.” 
4. Gilding by Electrography.—Mr. Dent, of: London, whose name 
is well known as a skillful art st in chronometers, as well as by various 
articles in this and other scientific journals on his own subject, has 
recently sent us by the hand of Mr. Blunt, a very delicate steel chro- 
hair-spring, about three’ fourths of an inch in length and one 
diameter, perfectly gilt with pure gold, by the 
y ae nts pare 
nage Sesto cy in the pec area 
ugh Mr. Dent remarked that 
p Same process has also been 
mint at Philadelphia, has 
in the prosecution of his du- 
sented us with a medallion of Flora 
eee most perfectly, Ks simple 
very weak neutral solution of the 
