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methyl ketol and related to indol. Methyl ketol, a weak organic base, obtained as a white crystalline substance having the odor of fæces.

An acid amide derived from lactic acid, and obtained as a white crystalline substance having a neutral reaction. It is metameric with alanine.

A white, crystalline substance, obtained from also, by extension, any similar substance.

A white, crystalline substance obtained as an anhydride of alanine, and regarded as an imido derivative of lactic acid.

Sugar of milk or milk sugar; a crystalline sugar present in milk, and separable from the whey by evaporation and crystallization. It has a slightly sweet taste, is dextrorotary, and is much less soluble in water than either cane sugar or glucose. Formerly called lactin.

A white, crystalline substance, having a bitter taste and a neutral reaction, and forming one of the essential ingredients of lactucarium.

A white, crystalline, tasteless substance, found in the milky sap of species of Lactuca, and constituting an essential ingredient of lactucarium.

An alkaloid found in opium in small quantities, and extracted as a white crystalline substance.

derived from, the European bay or laurel (Laurus nobilis). Lauric acid (Chem.), a white, crystalline substance, C12H24O2, resembling palmitic acid, and obtained from the fruit of the bay tree, and other sources.

A white crystalline substance extracted from the fruit of the bay (Laurus nobilis), and consisting of a complex mixture of glycerin ethers of several organic acids.

zinc in lead acetate. -- Mock lead, a miner's term for blende. -- Red lead, a scarlet, crystalline, granular powder, consisting of minium when pure, but commonly containing several of the oxides of lead. It is used as a paint or cement and also as an ingredient of flint glass. -- Red lead ore (Min.), crocoite. --…

hich is obtained from several varieties of lichen (Lecanora, Roccella, etc.), as a white, crystalline substance, and is called also orsellic, or diorsellinic acid, lecanorin, etc.

e (Zoöl.), a yellow European sole (Solea aurantiaca). -- Salts of lemon (Chem.), a white crystalline substance, inappropriately named, as it consists of an acid potassium oxalate and contains no citric acid, which is the characteristic acid of lemon; -- called also salis of sorrel. It is used in removing ink stains. S…

One of the higher alcohols of the paraffine series obtained from spermaceti as a white crystalline solid. It is so called because it occurs in the ethereal salt of lauric acid.

A colorless, crystalline, organic base, obtained from rosaniline by reduction, and also from other sources. It forms colorless salts.

A white, crystalline, nitrogenous substance formed in the decomposition of albuminous matter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found as a constituent of various tissues and organs, as the spleen, pancreas, etc., and likewise in the vegetable kingdom…

r principle found in the bark of the privet (Ligustrum vulgare), and extracted as a white crystalline substance with a warm, bitter taste; -- called also ligustron.

s contains also magnesium carbonate, and is then called magnesian or dolomitic limestone. Crystalline limestone is called marble.

A bitter, white, crystalline substance found in orange and lemon seeds.

Pertaining to, or designating, a crystalline, organic acid, resembling cholic acid, found in the biliary intestinal concretions (bezoar stones) common in certain species of antelope.