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The order of the balls should be random, with the exceptions of the 8-ball, which must be placed in the center of the rack (i.e., the middle of the third row), and the two back corner balls, one of which must be a stripe and the other a solid. On the table are balls with numbers from 1 to 15 (half of them with a solid color, while the other half with a striped). Association croquet is played between two individuals or teams, each playing with two balls. Golf croquet is played between two individuals or teams, each playing with two balls. On the page facing the title page is a picture of Eglinton Castle with a game of "croquet" in full swing. By the late 1870s, however, croquet had been eclipsed by another fashionable game, lawn tennis, and many of the newly created croquet clubs, including the All England Club at Wimbledon, converted some or all of their lawns into tennis courts. In nine-ball, the basic principles are the same as detailed in the eight-ball section above, but only balls 1 through 9 are used; the 1 ball is always placed at the rack's apex (because in nine-ball every legal shot, including the break, must strike the lowest numbered ball first) over the table's foot spot, and the 9 ball is placed in the center of the rack.

Billiards is a classic cue sport that involves players using a cue stick to strike cue balls, aiming to pocket object balls into designated pockets on the billiard table. The sport had its beginnings way back in the 15th century in Northern Europe. An easy way to remember these positions is with the mnemonic, 'God Bless You', with the first letter of each word being the first letter of the three colours as they are racked from left to right on the baulk line. A semicircle of radius 11.5 inches, called the "D", is drawn behind this line, centred on the middle of the line. If you want to hit a ball that’s slightly behind another ball, you can master "swerve" (which we discuss below) to develop this highly important skill. The twist: the player must hit the lowest numbered ball first. Then it will be when you achieve your first century (100 balls).

It is normally the first coat applied, then it is sanded and followed by other coatings that bond to it. Some players (most often amateurs) place the balls in numeric order but for the 9 ball; from the top of the triangle down and from left to right, i.e., the 1 on the foot spot, followed by the 2 then 3 in the second row, and so on. Unlike traditional racks, template racks are left on the table during the break shot and removed at the players' earliest convenience. Purported benefits of template racks include a more consistent racking, and their popularity has warranted specific inclusion in profession rules. The rules also vary depending on whether the cue ball or fifteenth ball are resting on the table's head spot. After the initial rack, the balls are played until only the cue ball and one object ball remain on the table's surface. If a player pots the cue ball in a side pocket, the opposing player can place the ball anywhere on the table. The object of the game is to legally pocket the 8-ball in a "called" pocket, which can only be done after all of the balls from a player's assigned group have been cleared from the table.

Thus, nitrocellulose can denote mononitrocellulose, dinitrocellulose, and trinitrocellulose, or a mixture thereof. A nitrocellulose slide, nitrocellulose membrane, or nitrocellulose paper is a sticky membrane used for immobilizing nucleic acids in southern blots and northern blots. Nitrocellulose (also known as cellulose nitrate, flash paper, flash cotton, guncotton, pyroxylin and flash string, depending on form) is a highly flammable compound formed by nitrating cellulose through exposure to a mixture of nitric acid and sulfuric acid. One of its first major uses was as guncotton, what is billiards a replacement for gunpowder as propellant in firearms. Guncotton, dissolved at about 25% in acetone, forms a lacquer used in preliminary stages of wood finishing to develop a hard finish with a deep lustre. In the form of collodion it was also a critical component in an early photographic emulsion, the use of which revolutionized photography in the 1860s. In the 20th century it was adapted to automobile lacquer and adhesives.