With this preface we shall now introduce the reader to the inside of one of these concert saloons, and show him the pretty waiter girl as his fancy pictures her, and as she really is: Chancing to walk along the street, the ears are assailed by the clash of music emanating from some basement, down perhaps a half a dozen steps. A number of red globes, surrounding as many gas jets, serve to show the entrance, on either side of which are full length paintings of women in short skirts. The door is of green leather or oil-cloth. Pushing this open, we enter and seat ourselves at one of the many round tables with which the place is plentifully supplied. In a second--not longer--several girls are beside us, and some sit down at our table. One--perhaps two at once--will immediately ask if we are not going to treat, and, in response, drinks are ordered. While one of the girls proceeds to supply the order, and before the drinks are brought, we glance around the saloon. On one side is the bar, at which several persons are standing, drinking with some of the sweet-voiced houris. The barkeeper and proprietor, both in their shirt sleeves, are behind it. On one side of the bar is a slightly-raised platform, upon which is a piano-player, a violinist and a shrill fifer. This is the music that charms and attracts. Around the room are men of all kinds, sailors, laboring men, seedy individuals, lovers, thieves, a few poor gamblers, fellows in hard luck and waiting for "something to turn up." Sprinkled over the place, talking, laughing, joking and striving to induce them to buy drinks, are a number of the waiter girls. The floor is plentifully and generously covered with plain sawdust, which answers the double purpose of effectually hiding the large cracks, and of absorbing the expectorations and spilled beer. The time is yet early and business is not very brisk, so we chat with the prettiest and youngest of the girls for a second only, when we are again importuned to drink by another of the fair ones, even before the first round is brought, for it must be understood that only the girl ordering the drinks gets any percentage. The drinks brought, the price is asked and the amount paid, as follows: Two beers, two lemonades with a stick in it for two girls, and two brandies for two others; total, one dollar and forty cents. Now the girls don't drink brandy, they have a little colored water, but they charge for brandy all the same, and pay the proprietor in pasteboard tickets, which are supplied by him to the girls in packages of five dollars worth and upwards. For that which she charged one dollar and forty cents she pays in checks forty cents, thus making a clear one dollar--five cents each for two beers, ten cents each for lemonades, and five cents each for the colored water. The customer pays ten cents for each glass of beer, twenty cents each for lemonade and forty cents each for brandy. When the customer fails to call for