No pains have been spared by the Author to make this a popular book, in fact a book for the million, and some idea may be formed of its vast usefulness when we inform the reader that THE REASON WHY has an

Index of Contents requiring Forty Columns of Fine Type.

No person who desires to figure in refined and intelligent circles should delay purchasing a copy of this capital work, for it will furnish thousands of ideas and important topics of conversation, so that the most ignorant person by reading it will be posted up on all scientific subjects.

What Haydn's Dictionary of Dates is in regard to historical events, this wonderful book is in respect to scientific facts. The plan of the book and its execution, leave nothing to be desired. We can cordially recommend this work to all those inquirers, young and old, of both sexes, who are never satisfied until they know the "reason why."

The man who goes out into the world, or attempts to attend properly to his domestic duties, will find himself, however abundantly supplied with books or bullion, perpetually embarrassed for the want of small facts and small change. This volume supplies the

Ready Coin of Conversation,

In the shape of SCIENCE FOR THE MILLION, and makes even the neglected in early studies feel quite at home upon every topic likely to be discussed within the ordinary range of the social circle. It imparts

Practical Information on the Subject of Practical Facts.

It may be denominated, Science made easy, or a world of useful every-day learning condensed into a volume for your pocket!

THE REASON W H Y Is a handsome 12mo. volume of 356 pages, printed on fine paper, bound in cloth, gilt, and embellished with a large,number of Wood Cuts, illustrating the various subjects treated of. PRICE ONE DOLLAR.

Copies mailed to any address in the United States or Canada, free of postage. Send your Cash orders to DICK &, FITZGERALD, Publishers,

No. 18 Ann Street, New York.

THE FAMILY AQUARIUM:

Or, Aqua Vivarium.

A NEW PLEASURE FOR THE DOMESTIC CIRCLE.

Being a Familiar and Complete Instructor upon the subject of the Construction,

Fitting up, Stocking, and Maintenance of the Marine and Fresh

Water Aquarium, or River and Ocean Gardens.

By H.D. BUTLER, Esq.

12mo. Cloth, with gilt side stamp. Price 50 Cents.

We natter ourselves that we know something of the character and principles of the Aquarium, as well as of its management, and we feel capable of doing justice to Mr. Butler, who, in this production, has succeeded in arraying even the dryest portion of the topic in gay and vivacious, not to say really pleasing colors. His style is easy, simple, interesting, full of good nature, and his pages abound with salient points of humor, as well as occasionally, flashes of truly eloquent thought, and moral commentary. The "Family Aquarium" we do not hesitate to pronounce the most perfect work of the kind extant in our language. It is not merecy a rehash of English books having reference to English habits and English localities. It is American in all respects, and remarkably original, not only teaching the "young idea how to shoot," in preparing an Aquarium as a substitute for the old fish globe, but showing why the water need never be changed, and illustrating the grand compensating princi-ple by means of which nature avoids all that redundant waste of exertion. The "Family Aquarium," also instructs the reader how and whereto supply himself with the most appropriate fish, the most suitable river or sea-plants, insects, Crustacea, anemones, or animal flowers, etc, and the best mode of sustaining them in health and vigor. With this little adviser on her parlor table, any lady may fit up an Aquarium to please her own taste. She cannot go astray Everything is set down and intelligibly explained, and though she may live a thousand miles from the sea-board, she will be able to present as perfect an Aquarium as a resident on the Atlantic coast. The volume has our heartiest and most conscientious commendation. - New York Times.

The Arts of Beauty;

Or, SECRETS OF A LADY's TOILET.

With Hints to Gentlemen on the Art of Fascinating.

By MADAM LOLA MONTEZ,

COUNTESS OF LANDSFELD.

Beautifully bound in cloth. Price 50 Cents.

This wonderful book contains an account, in detail, of all the arts employed by the ladies of all the chief cities of Europe for the purpose of developing and preserving their charms. Independent of its rare and useful recipes, the book is a curiosity as a piece of art itself, for the most delicate subjects are handled with a skill and an unexceptional propriety of language that is truly surprising. The hints to gentlemen on the art of fascinating, form one of the most amusing and biting pieces of irony and sarcasm that was ever written. The wit of this portion of the book is inimitable, and the "coarser sex," as Lola quaintly calls the men, ought universally to bow to her with thanks and admiration for the work which she has performed.