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An embryonic form having its origin in the invagination or pushing in of the wall of the planula or blastula (the blastosphere) on one side, thus giving rise to a double-walled sac, with one opening or mouth (the blastopore) which leads into the cavity (the archenteron) lined by the inner wall (the hypoblast). See Illu…

To concentrate; to come to a head, as a sore, and generate pus; as, a boil has gathered.

A staff to guage water, or to push a boat.

A minute spherical or rounded structure; as blood, lymph, and pus corpuscles, minute fungi, spores, etc.

An instrument for measuring the number of red blood corpuscles in the blood.

uble in water, but soluble in dilute solutions of salt. It is present in the red blood corpuscles united with hæmatin to form hæmoglobin. It is also found in the crystalline lens of the eye, and in blood serum, and is sometimes called crystallin. In the plural the word is applied to a group of proteid substances such a…

Power of going or doing; energy; vitality; perseverance; push; as, there is no go in him. [Colloq.]

One of several species of pygmy geese, of the genus Nettepus. They are about the size of a teal, and inhabit Africa, India, and Australia.

tion; also, a ground plan. -- Ground plum (Bot.), a leguminous plant (Astragalus caryocarpus) occurring from the Saskatchewan to Texas, and having a succulent plum-shaped pod. -- Ground rat. (Zoöl.) See Ground pig (above). -- Ground rent, rent paid for the privilege of building on another man's land. -- Ground robi…

well-feathered legs, and usually mottled plumage. The group includes the ptarmigans (Lagopus), having feathered feet.

A thin balsam or wood oil derived from the Diptcrocarpus lævis, an East Indian tree. It is used in medicine, and as a substitute for linseed oil in the coarser kinds of paint.

The inspissated juice of a tree of the genus Artocarpus (A. incisa, or breadfruit tree), sometimes used in making birdlime, on account of its glutinous quality.

A cell or mass of protoplasm devoid of an envelope, as a white blood corpuscle.

A labiate plant (the Lycopus Europæus). Gypsies are said to stain their skin with its juice.

A substance found in the blood of the octopus, which gives to it its blue color.

An apparatus for determining the number of corpuscles in a given quantity of blood.

One of the very minute, disk-shaped bodies found in blood with the ordinary red corpuscles and white corpuscles; a third kind of blood corpuscle, supposed by some to be an early stage in the development of the red corpuscles; -- called also blood plaque, and blood plate.

Dissolution of the red blood corpuscles with diminished coagulability of the blood; hæmolysis. -- Hæm`a*to*lyt"ic (#), a.

An instrument for determining the number of blood corpuscles in a given quantity of blood.

A breaking up of the blood corpuscles, as by pressure, in distinction from solution of the corpuscles, or hæmcytolysis.