More than one of these 7 encyclopedias carries each of the following subjects — but every one of them treats it in a sentence or two and then moves on. They are gathered here so the different accounts can sit side by side.
Poplin
Aiton's Encyclopedia: a dress fabric woven with a silk warp and a wool weft. The weft is somewhat heavier than the warp, which gives the goods a ribbed surface, similar to, although less pronounced than, that of bengaline. Irish poplin has long borne a well deserved reputation. The materials composing it are of the best and the result is a fabric more durable than one entirely of silk, and fully equal in appearance. Poplin is imitated in wool and linen, in cotton, and in various mixtures. A mercerized cotton poplin is a pretty and serviceable fabric, used largely for fancy work.
Collier's New Encyclopedia: a silk and worsted stuff, Irish poplins have a silk warp and Originally an allsilk French goods. worsted weft, and in the common grades cotton or flax is mixed with the silk. tain"), a volcano about 40 miles S. E. of the City of Mexico . It rises in the form above the sea-level. No eruption has been of a cone to the height of 17,784 feet recorded since 1540 ; it still smokes, however. around its crater (5,165 feet in diameter, It is often scaled and in and POPOCATEPETL ("smoking mounsulphur is obtained.
Covered by Aiton's Encyclopedia and Collier's New Encyclopedia
Porosity
The Encyclopedia of Founding: Pores are small interstices between the particles of matter which compose bodies, and are either empty or filled with some insensible medium. Condensation and rarefaction are only performed by opening and closing the pores. What shape the atoms of different bodies are, we have no means of determining. Pores are often visible to the naked eye, as in sponge and pumice-stone; but in gold and granite they are too minute to be detected. If we place a little water on chalk or cloth it disappears; in a certain sense it penetrates them, but it does not enter into the solid particles; it only passes into the vacant places or pores. A piece of iron is made smaller by hammering. This proves its porosity. Its particles could not be brought into closer contact if there were no interstices between them. Mercury passes through lead, and water may be forced through the pores of gold. So that, though matter is essentially impenetrable, it is also universally porous. See PARTICLE.
Collier's New Encyclopedia: the quality or state of being porous or of having pores; porousness; specifically, that property of matter in consequence of which its particles are not in absolute contact, but are separated by pores or intervals; the opposite to density.
Covered by The Encyclopedia of Founding and Collier's New Encyclopedia
Port Said
Collier's New Encyclopedia: a town of Egypt, on the W. side of the Suez Canal, on a desolate strip of land between Lake Menzaleh and the Mediterranean. The place owes its origin to the Suez Canal, being named after Saïd Pasha , its promoter, and depends wholly on the canal trade, being mainly a coaling station for steamers . Pop. with Ismailia, about 95,000. In the World War it was a military base for operations against the Turks.
Aiton's Encyclopedia: . See Suez Canal
Covered by Collier's New Encyclopedia and Aiton's Encyclopedia
Portland Cement
Collier's New Encyclopedia: a cement having the color of Portland stone. PORTLAND, ISLE OF, a peninsula, supposed to have been formerly an island, in the county of Dorset, 50 miles W. S. W. of Southampton, in the British Channel. It is attached to the mainland by a long ridge of shingle, called the Chesil Bank, and it consists chiefly of the well-known Portland stone, which is is chiefly worked by convicts, and exlarge quantities. One of the ported in lar most prominent objects in the island is the convict prison, situated on the top of a hill. The extremity of the island is called the Bill of Portland, and between it and a bank called the Shamcurrent called bles is a dangerous the Race of Portland.
The Encyclopedia of Founding: So called from its near resemblance to Portland stone in color. It not only possesses the property of setting more quickly, and has greater power of cohesion than the natural cements, but it may be used with a superabundance of water in the form of grout, which they cannot be. This cement is made from Westmacott's patent carbonate in combination with chalk, gray, and all other limes. All the carbonic acid being removed from the lime in its burning, 75 per cent of this acid is restored by its mixture with the prepared patent carbonate.
Covered by Collier's New Encyclopedia and The Encyclopedia of Founding
Poultry
Collier's New Encyclopedia: a general name for all birds bred for the table, or kept for their eggs. The birds most commonly included under this designation n are the common fowl, the peafowl, the guinea fowl, the turkey, goose, and duck. There is this great difference between the varieties of the domestic fowl, that some are disposed by constitution to continue laying throughout the whole season without sit- 2 4 POULTRY 3. Brown Leghorn 4. Indian Game ting: while others after having laid from 12 to 15 eggs sit obstinately, and cease to lay. Among the breeds most in favor are those known as Dorking, Game, Rhode Island Reds, Hamburg, Cochin, Brahma, Scots Gray, Polish, Spanish, Leghorn, Plymouth Rock, Houdan, Minorca, etc. Hatching by artificial means has long been practiced in Egypt, and artificial incubators are in general use in the United States and other countries.
Aiton's Encyclopedia: a collective term for various domestic fowls. They are discussed in separate articles. The following statistics from the twelfth United States census are of interest: Number of chickens 233,588,085 Number of ducks 4,807,358 Number of geese 5,676,863 Number of turkeys 6,599,367 Total 250,681,593 Dozens of eggs, year 1.293,819,186 Annual sales of poultry and eggs $425,000,000 With the exception of chickens and eggs, these figures show a remarkable falling off as compared with statistics for 1890. See Chicken ; Duck ; Turkey ; Goose ; Guinea Fowl ; Pigeon
Covered by Collier's New Encyclopedia and Aiton's Encyclopedia
Precious Metals
The Encyclopedia of Founding: 2026 Editor's Note: This page uses language about other peoples, religions, or nationalities that was commonplace when the book was published and is offensive by today's standards. The text has been left exactly as it was printed, rather than cut or softened, so that the historical record — including how ordinary such language once was — is preserved. (Ed: ET 2026-07-22) Gold and silver are denominated precious metals because their peculiar properties preeminently fit them for becoming standards of value. Even barbarians are cognizant of their superiority over all other metals. They have a brilliant lustre, are hard, and of high specific gravity, not subject to oxidization, fusible, malleable--the two latter properties permitting them to be cast or stamped with designs; and, besides all these superior qualities, they are found pure. See GOLD; SILVER.
Collier's New Encyclopedia: gold and silver, so called on account of their value.
Covered by The Encyclopedia of Founding and Collier's New Encyclopedia