686 
IMPORTANT TABLES IN CHEMISTRY. 
nott, to suppose that an insect, driven along 
at the rate of eight or ten miles an hour by a 
river torrent, should have power to stop or 
sail against the steam, as a man in a balloon 
by means of wings or sails, could resist or 
change a motion in the air generally exceed- 
ing i fifty miles an hour. 
I remain Sir, 
Your obedient servant, 
Vincent Brown. 
THE 
STUDY OF SCIENCE, 
A FAMILIAR INTRODUCTION 
TO THE 
PRINCIPLES OF SCIENCE AND THE ARTS. 
classes, namely, the non -metallic element® 
and the metals ; to which are annexed the 
names of those chemists by whom they were 
discovered, or by whom their elementary 
nature was first ascertained, and the date 
of the discovery. 
CHEMISTRY. 
(Continued from page 355.) 
The following table exhibits a list 
of all the elementary or simple bodies 
hitherto discovered, divided into these two 
TABLE OF SIMPLE SUBSTANCES. 
I. Non-metallic Elements. Date of 
Discoverers. Discovery. 
1 Oxygen Dr. Priestly, in England ; and Scheele, in Sweden 1774 
2 Chlorine Scheele, in Sweden .. .. .. 1774 
3 Iodine Courtois, in France . . .. .. .... 1811 
4 Bromine .. .. Balard, in France .. .. .. 1826 
5 Fluorine -f accurately investigated by Scheele ; but 
* * * ' 1_ it has never been exhibited in a separate state 
6 Hydrogen Cavendish, in England 
7 Nitrogen .. .. Dr. D. Rutherford, in Scotland 
8 Carbon 
9 Boron .. .. Sir H. Davy, in England 
10 Silicon Berzelius, in Sweden 
11 Phosphorus.. .. Brandt, at Hamburgh 
12 Sulphur 
13 Selenium Berzelius, in Sweden 
II. Metals. 
15 ■ ■ ; : } 
16 Lithium Oxide discovered by Arfvedson, in Sweden .. 
17 Baryum .. ..1 
18 Strontium .... V Sir H. Davy, in England .. ,, 
19 Caleium . . . . J 
20 Magnesium. . . . Bussy, in France 
21 Aluminum.. .. Wohler, in Germany 
22 Glucinum . , . . Oxide discovered by Vauquelin, in France . . 
23 Yttrium Oxide discovered by Gadolin, in Sweden 
24 Zirconium . . Berzelius, in Sweden 
25 Thorium . . . . Berzelius 
26 Cerium . . . . Mosander, in Sweden 
27 Tellurium . . Klaproth, at Berlin . . 
f Appears to have been known to Paracelsus, in the 
28 Arsenic . . . . s century ; but first accurately examined by Geo. Brandt, 
i in Sweden 
29 Antimony.. 
30 Chromium 
Known to Basil Valentine 
Vauquelin, in France 
j 16th I 
irandt, ^ 
about 
1766 
1772 
1807 
1824 
1669 
1818 
1807 
1818 
1808 
1829 
1828 
1797 
1794 
1824 
1804 
1797 
1733 
1450 
1797 
