CO 
REPORT— 1847. 
former pr^ess. This difference is very coosiderable, and ought especiilly to oth 
the attention of chemists engaged in the quantitatire detenninatioD and analysis rf 
the ashes of plants. 
J\rpentntnta on Cryslatlixation under extreme Pressure. .^W.S.W,i*a 
This was a statement that a number of expetiments had been made an« the Its 
meeting of (he Association, with u view of determining if a specuIatioD tbenthmtt 
out was correct. Common salt, muriate of ammonia and other salts wereapo*4 
in loIutioQ, to a pressure of 100 atmospheres; hut no difference in their crrsuUiB* 
ble powers were apparent. It was therefore proved, that under a pressure eqniite 
tak^ depths of the Mediterranean no crystalllzatiun frompreswrewidd 
Mr. ^*fd exhibited a new Galvanometer. In this instrument the wnent is 
men.sured by the deflection of the conducting wire by a permanent magnet. Ifeeal 
of wire being placed vertically over the poles of the magnet, is free to mow, «ds 
nc current is more or less powerful, the coil requires a greater or leas weielt tt 
^ ring (t to its original position : hence the force of the current is expressed iniji® 
instead of in degrees. 
On the Inorganic Constituetits of Root Crops. By Prof. Wat. 
On (he Pr€sm>ation of Metals and Metallic Combinations from 
Recomposition and Injury from Marine Deposits and Incrustation!. 
iiaroii Charles Wbtterstedt. 
♦L communication detailed the advantages which have arisen from tlie 
applying what appeared from the statement to be a snlpho^ 
^ varnish, to ships’ bottoms. Numerous spedmem sat 
p oof of the protecting influence of this composition. 
GEOLOGY AND PHYSICAL GEOGRAPHY. 
On a rm^kable Moi:ement of the Sulden Glacier under the sideof theOrtlff 
»»ihc years l81o~\6, and aUo in 1845^6. % Sir T. D. AcwmI’ 
iSiSthe Sulden glacier had moved for 
in the veai- m 4 R**v*k**j**® miles down the vallev from its ordinary posidooi ?“'i, 
ill the Anril if same place as itordinarily occupied; W 
upiaMs^of A to mo«; and early in 1846 U W 
read ainartnn/ m which it had before stood. 
d” Stotts nn,I^“ roeh^"*' 
..f »k ri . . « on me western side of the vallev. wmen overu..-' 
reirfoB bctl^rI?niK* n f Slader, which, beginning oo ll«ljL 
vaffev . iothi.ini Kunigswand, fills up the highest jiutoftbs* 
tains iiVthe same the Plaitcn glacier cormecled 
iast in the hi /> glacier, wbicb is situated towards lb* 
in nctive IS ‘h® Zeihriver. All these glaciers are withis H>f 
htr. John understand by the kind communications of 
years l 815 to Isi? S>"ce the period of its last move®^ L 
diminished in mas/* i?f S^foier had considerably retired, and 
mass. Its surface was but little cloven, and could be $tepp«i “l""“ 
