See Also: Perkins, Jacob(encyclopedia)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Perkins(medicine)
Perkins, Anthony(encyclopedia)
Perkins, Frances(encyclopedia)
Perkins (as used in expressions)(encyclopedia)
Travis Perkins(finance)
Perkins, Maxwell (Evarts)(encyclopedia)
Clifton T Perkins Hospital(health)
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cortex cerebri (medicine) and Perkins, Jacob (sh)


cortex cerebri (medicine)


cortex cerebri -->
cerebral cortex
The outer portion of the brain, consisting of layersof nerve cells and the pathways that connect them. The cerebralcortex is the part of the brain in which thought processes take place.In Alzheimer's disease, nerve cells in the cerebral cortex die.


Perkins, Jacob (sh)




born July 9, 1766, Newburyport, Mass., U.S.
died July 30, 1849, London, Eng.

U.S. inventor.

He built a machine to cut and head nails in one operation งใ 1790. He developed a method of engraving paper money that made counterfeiting difficult; lack of interest in the U.S. led him to set up a bank-note factory in England (1819). He experimented with high-pressure steam boilers, built a horizontal steam engine (1827), designed an improved paddle wheel (1829), and invented a means for the free circulation of water in boilers (1831) that led to the design of modern water-tube boilers.