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ot necessarily without a crystalline structure, but having no regular form; as, a mineral occurs massive. Massive rock (Geol.), a compact crystalline rock not distinctly schistone, as granite; also, with some authors, an eruptive rock.

which are incisor teeth. The species were mostly larger than elephants, and their romains occur in nearly all parts of the world in deposits ranging from Miocene to late Quaternary time.

Pain occuring in the mamma or female breast, -- a form of neuralgia.

Pertaining to, or designating, an acid which occurs in opium, and which may be obtained by oxidizing narcotine.

s, air is the common medium of sound. Hence: The condition upon which any event or action occurs; necessary means of motion or action; that through or by which anything is accomplished, conveyed, or carried on; specifically, in animal magnetism, spiritualism, etc., a person through whom the action of another being is s…

A member of the scapolite, group, occuring in glassy crystals on Monte Somma, near Naples.

A mineral occurring in small yellow crystals, found in the lavas (melilite basalt) of Vesuvius, and elsewhere. [Written also mellilite.]

neral mellite. Mellitic acid (Chem.), a white, crystalline, organic substance, C6(CO2H)6, occurring naturally in combination with aluminium in the mineral mellite, and produced artificially by the oxidation of coal, graphite, etc., and hence called also graphitic acid.

neral, consisting chiefly of the oxides of iron and titanium. It is commonly massive, but occurs also in rhombohedral crystals. Called also titanic iron ore, and ilmenite.

ion F1). In the formation of the germ cells of these crossbreeds a process of segregation occurs such that germ cells, whether male or female, are produced of two kinds, T and t, in equal numbers. The T cells bear the factor "tallness," the t cells are devoid of it. The offspring, generation F2, which arise from the ch…

Occurring once in a month; monthly.

A zeolitic mineral, grayish white or yellowish, occuring in delicate groups of crystals, also fibrous massive. It is a hydrous silicate of alumina, lime, and soda.

Of, pertaining to, concerned in, or occurring by, metalepsy.

A substance obtained from, and resembling, pectin, and occurring in overripe fruits.

sed to fall from meteors. -- Meteoric showers, periodical exhibitions of shooting stars, occuring about the 9th or 10th of August and 13th of November, more rarely in April and December, and also at some other periods.

ine gas, CH3.NH2, having an ammoniacal, fishy odor. It is produced artificially, and also occurs naturally in herring brine and other fishy products. It is regarded as ammonia in which a third of its hydrogen is replaced by methyl, and is a type of the class of substituted ammonias. -- Methyl ether (Chem.), a light, v…

Profuse bleeding from the womb, esp. such as does not occur at the menstrual period.

e mineral of resinous luster and high specific gravity. It is a tantalate of calcium, and occurs in octahedral crystals usually very minute.

An unnatural smallness of the eyes, occurring as the result of disease or of imperfect development.

oyster. Condensed milk. See under Condense, v. t. -- Milk crust (Med.), vesicular eczema occurring on the face and scalp of nursing infants. See Eczema. -- Milk fever. (a) (Med.) A fever which accompanies or precedes the first lactation. It is usually transitory. (b) (Vet. Surg.) A form puerperal peritonitis in cattl…