Note:  Do not rely on this information. It is very old.


Caesium (Cs.; at. wt. 132.7; sp. gr. 1.88), a metallic element closely allied to the alkali metals sodium, potassium, etc. It never occurs free, and its salts, though widely distributed, are only found in small quantities; amongst other sources, in mineral waters, saltpetre residues, ashes of plants - especially tobacco. It is silver white in colour, soft and ductile, and decomposes water very readily. It is best detected by the spectroscope, giving two fine lines in the blue.

“When the soul is once taken up with the things that are of absolute necessity, it will not be much troubled about other things.”
–Jeremiah Burroughs, The Rare Jewel of Christian Contentment