a Scientific Intelligence. [Apait; 
baron p plerumque mediocrem arenam magnitudine zquant.” 
—(P. 38.) 
_Sir Humphry Davy observes, in his Elements of Chemical 
Philosophy, p. 350, “In my first paper on the Decomposition of 
the Earths, published in 1808, I called the metal from magnesia, 
magnium, fearing lest, if called magnesium, it should be con- 
founded with the name formerly applied to manganese. The 
candid criticisms of some philosophical friends have induced me 
to apply the termination in the usual manner.” : ; 
y did not. Sir H. likewise substitute baritium and boracion 
for barium and boron? The latter appellations appear to me to 
be equally improper with magnium. 
Tt would appear from Mr. Halifax’s statement, Annals, Nov. 
1818, that Mr. Bakewell’s discovery of prehnite in Gloucester- 
shire had not, until his communication, been made public.— 
Mr. B. soon after his discovery, announced it in the Philoso- 
phical Magazine I am, Sir, 
Yours respectfully, a. 
XII. State of the Barometer, Thermometer, and Magnetical 
Needle at Tronyem (Drontheim), in Norway, from 1762 to 
1783, inclusive-—(See Clarke’s Travels, vol. v. and Part I. 
Appendix.) 
BAROMETER, 
Highest. Lowest. 
1762—Dec...... 30 30°68 JANs 2. Shunde 13 28°55 
1763—March... 12 30°64 jb eee 30 28-64 
1764—Feb...... 23 30:70 MM ere iclice’ « 28 28°53 
 '765—Feb...... 2 30°55 March..... 25 28°66 
» » 1166—Nov..... 7 30°57 March,.... 27 28°84 
1767-—-Dec..... 25 30°55 Oct: 2e5: 26 28°30 
1768—Dec. 12, 14 30°59 Dees. as tans 28 98°57 
1769—Oct...... 14 30°70 Aprils os8. 12 28°66 
770—April.... 28 30°33 RED: ose cne 18 28°10 
WTi—Feb. 9, 17 30°44 OEE os serorcy: Vinca 28-44 
J772—March 8, 13 30°26 {07 Dear ie Ps lL 28°77 
1773-—-March... 11 30°59. Bebe cies 24 28°42 
17TA—Dec...... 7 30°86 Beb. wasted » 2h 28°57 
I7T75—Jan...... 24 30°64 Bed scans 2 28°53 
1776—Jan...... tf 30°46 Heb) cicveeele 6 28°28 
1777—Feb...... 8 30°50 OCS Aas as Sy 28°81 
1778—March ... 11 30°55 Hebe. eee 23 28-62 
1779—March... 7 30°52 Déeigackaeas 23 28-1T 
1780—Dec..... . 19 30°61 Ochi estes 20 28-32 
1781—Jan. 9, 10 30-61 Bebisiviedicwe 12 28°66 
1782—Nov. .... 8 30:46 Cet 8.19 28°38 
1783—March. .. 15 30°35 eb vices xcs 9 28-70 
wo 
