Day's American Ready-Reckoner. This Ready-Reckoner is composed of Original Tables, which are positively correct, having been revised in the most careful manner. It is a book of 192 pages, and embraces more matter than 500 pages of any other Reckoner. It contains: Tables for Rapid Calculations of Aggregate Values, Wages, Salaries, Board, Interest Money, etc.; Tables of Timber and Plank Measurement; Tables of Board and Log Measurement, and a great variety of Tables and useful calculations which it would be impossible to enumerate in an advertisement of this limited space. All the information in this valuable book is given in a simple manner, and is made so plain, that any person can use it at once without any previous study or loss of time.

Brisbane's Golden Ready-Reckoner. Calculated in Dollars and Cents. Showing at once the amount or value of any number of articles or quantity of goods, or any merchandise, either by gallon, quart, pint, ounce, pound, quarter hundred, yard, foot, inch, bushel, etc., in an easy and plain manner.

Dick's Log and Lumber Measurer. A complete set of Tables, with full instructions for their use, showing at a glance the cubical contents of logs and the feet of inch-boards they contain by Doyle's Rule, the measurement of timber of all kinds and dimensions, and all other necessary information for measuring and estimating the value of lumber according to present usages. It includes also useful and practical Tables of Wages by the day, week, and month, and valuable statistical matter of interest to carpenters, builders, and the lumber trade. All the tables are new, reliable, and proved correct.

Row's Complete Fractional Ready Reckoner. For buying and selling any kind of merchandise, giving the fractional parts of a pound, yard, etc., from one-quarter to one thousand at any price from one-quarter of a cent to five dollars.

Row's National Wages Tables. Showing at a glance the amount of wages, from half an hour to sixty hours, at from $1 to $37 per week. Also from one-quarter of a day to four weeks, at $1 to $37 per week. By this book a large pay-roll can be made out in a few minutes, thus saving more time in making out one pay-roll than the cost of the book.

The Magicians Own Book; or, The Whole Art of Conjuring. A complete hand-book of Parlor Magic, containing over a thousand Optical, Chemical, Mechanical, Magnetic and Magical Experiments, Astonishing Sleights and Subtleties, Celebrated Card Deceptions, Ingenious Tricks with Numbers, curious and entertaining Puzzles, the art of Secret Writing, together with all the most noted tricks of modern performers.

The American Boy's Manual of Practical Mechanics. Prominent among the wide range of subjects embraced in this book are Carpentry and Carpenters' Tools; Plain and Ornamental Turning in Woods, Metal, etc.; the construction of various model Steam Engines and Steamboats; Boat and Canoe building, Telegraphy, and the various batteries employed; Electrotyping, Dioramas, Sand Clocks, Glass Blowing and Gilding on Glass; Magic Lanterns, and Calcium Lights; Aquaria; Telescopes; Balloons, and Fireworks; and other useful and ornamental appliances. Profusely illustrated.