A Treatise on Domestic Economy; For the Use of Young Ladies at Home and at School

the common American Hemlock, an annual plant of four or five feet in height, and found commonly along walls and fences, and about old ruins and buildings. It is a virulent poison, as well as one of the most important and valuable medicinal vegetables. It is a very different plant from the Hemlock tree, or _Pinus Canadensis_. _Clarke_, (Sir Charles Mansfield,) _Dr._, a distinguished English physician and surgeon, who was born in London, May 28, 1782. He was appointed Physician to Queen Adelaide, wife of King William IV., in 1830, and in 1831, he was created a baronet. He is the author of several valuable medical works. _Cobalt_, a brittle metal, of a reddish-gray color and weak metallic lustre, used in coloring glass. It is not easily melted nor oxidized in the air. _Cochineal_, a color procured from the cochineal insect, (or _Coccus cacti_,) which feeds upon the leaves of several species of the plant called cactus, and which is supposed to derive its coloring matter from its food. Its natural color is crimson; but by the addition of a preparation of potash, it yields a rich scarlet dye. _Cologne water_, a fragrant perfume, which derives its name from having been originally made in the city of Cologne, which is situated on the River Rhine, in Germany. The best kind is still procured from that city. _Comparative anatomy_, the science which has for its object a comparison of the anatomy, structure, and functions, of the various organs of animals, plants, &c., with those of the human body. _Confection_, a sweetmeat; a preparation of fruit with sugar; also a preparation of medicine with honey, sirup, or similar saccharine substance, for the purpose of disguising the unpleasant taste of the medicine. _Cooper, Sir Astley Paston_, a celebrated English surgeon, who was born at Brooke, in Norfolk county, England, August 23, 1768, and commenced the practice of Surgery in London, in 1792. He was appointed Surgeon to King George IV., in 1827, was created a baronet in 1821, and died February 12, 1841. He was the author of many valuable works. _Copal_, a