Crossword-Solution: CASO 4 letters, 2 clues 🏆 scrabble score: 6

Caso has an instance of menstruation from the gums, and there is on record the description of a woman, aged thirty-two, who had bleeding from the throat preceding menstruation; later the menstruation ceased to be regular, and four years previously, after an unfortunate and violent connection, the menses ceased, and the woman soon developed hemorrhoids and hemoptysis.

For the information of readers who do not understand the chemical symbols it may be said that FeCO3 is carbonate of iron; CaCO3 is carbonate of calcium; CaSO4 is sulphate of calcium; CaCl2 is chloride of calcium; MgCl2 is chloride of magnesium; NaCl is chloride of sodium, or common salt.

And that: Carbonate of lime, CaCO_{3} } { (CaSO_{4}.H_{2}O) (gypsum), Sulphurous acid, SO_{2}, and } yield { 3S (sulphur) and Sulphureted hydrogen, 3H_{2}S, } { CH4, which is marsh gas.

Thus: CaCO_{3} } { CaSO_{4}.H_{2}O (gypsum) H_{2}S, } yield { and 2H_{2}O, } { CH_{4}, which is marsh gas.

And 2CaCO_{3}, } { 2CaSO_{4}.H_{2}O 2H_{2}S, } yield { and 2H_{2}O_{2}, } { C_{2}H_{4}, which is _ethylene._ Tables are given showing the formulæ for the homologues of ethylene and marsh gas resulting from the increase in regular gradation of the same constituents.