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The outer or superficial part of an organ; as, the cortex or gray exterior substance of the brain.

bark or rind; resembling bark or rind; external; outer; superficial; as, the cortical substance of the kidney.

st, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond.

A substance obtained from the residues of the distillation of petroleum, essentially the same as vaseline, but of somewhat stiffer consistency, and consisting of a mixture of the higher paraffines; a kind of petroleum jelly.

A Hindoo measure of distance, varying from one and a half to two English miles. Whitworth.

in a picture, statue, poem, or play, as is appropriate to the time, place, or other circumstances represented or described. I began last night to read Walter Scott's Lay of the Last Minstrel . . . .I was extremely delighted with the poetical beauty of some parts . . . .The costume, too, is admirable. Sir J. Mackintosh.…

A white, crystalline substance, C12H13NO3, obtained as a product of the decomposition of narcotine. It has weak basic properties, and is usually regarded as an alkaloid.

A soft, downy substance, resembling fine wool, consisting of the unicellular twisted hairs which grow on the seeds of the cotton plant. Long-staple cotton has a fiber sometimes almost two inches long; short-staple, from two thirds of an inch to an inch and a half.

A measure of length; the distance from the elbow to the end of the middle finger; a cubit.

current produced by an electro-motive force of one volt acting in a circuit having a resistance of one ohm, or the quantitty transferred by one ampère in one second. Formerly called weber.

directly proportional to the product of the charges and inversely to the square of the distance between them.

ic acids, related to cinnamic acid, the most important of which is a white crystalline substance, HO.C6H4.C2H2.CO2H, obtained from the tonka bean, sweet clover, etc., and also produced artifically.

a) odorata and consisting essentially of coumarin proper, which is a white crystalline substance, C9H6O2, of vanilla- like odor, regarded as an anhydride of coumaric acid, and used in flavoring. Coumarin in also made artificially.

Action in opposition; hindrance resistance. [They] do not . . . overcome the counteraction of a false principle or of stubborn partiality. Johnson.

as a design or painting, by tracing with a pencil on oiled paper, or other transparent substance.

Resistance; opposition; a stand against. Making counterstand to Robert Guiscard. Longfellow.

The resistance of a horse, that interrupts his cadence and the measure of his manege, occasioned by a bad horseman, or the bad temper of the horse.

Sticking plaster made by coating taffeta or silk on one side with some adhesive substance, commonly a mixture of isinglass and glycerin.

a female); to serve; as. a horse covers a mare; -- said of the male. To cover ground or distance, to pass over; as, the rider covered the ground in an hour. -- To cover one's short contracts (Stock Exchange), to buy stock when the market rises, as a dealer who has sold short does in order to protect himself. -- Cover…

weights, and, while holding them suspended, transporting them through a limited lateral distance. In one form it consists of a projecting arm or jib of timber or iron, a rotating post or base, and the necessary tackle, windlass, etc.; -- so called from a fancied similarity between its arm and the neck of a crane See Il…