In the morning of time,

Mode of access: Internet.

Panama and the canal in picture and prose : a complete story of Panama, as well as the history, purpose and promise of its world-famous canal--the most gigantic engineering undertaking since the dawn of time /

"500 copies...printed...Number 33.

The course of time : a poem.

Mode of access: Internet.

The course of time, a poem /

Memoir: p.[v]-xxiv.

Extension of tenure of government control of railroads : hearings before the Committee on Interstate Commerce, United States Senate, Sixty-fifth Congress, third session, on the extension of time for relinquishment by the government of railroads to corporate ownership and control.

Vol. 1. Hearings, January 3 to February 21, 1919.- -v. 2. Appendix. Hearings before the Joint Subcommittee on Interstate and Foreign Commerce, November 20, 1916 to May 9, 1917.-- v. 3. Appendix. Hearing before the Joint Subcommittee on Interstate and Foreign Commerce, November 1, 1917 to December 19, 1917.

An Universal history, from the earliest account of time.

Vol. 21, "Chronological tables to the foregoing twenty volumes".

The fulness of time and other studies in theology /

Mode of access: Internet.

A descriptive catalogue of the first series of the works of the Camden society: stating the nature of their principal contents, the periods of time to which they relate, the dates of their composition, their manuscript sources, authors, and editors. Accompianied by a classified arrangement and an index, and by some illustrative particulars that have arisen since their publication.

Mode of access: Internet.

In the matter of: proposed adoption of a four-day, forty-hour workweek, without payment of time and one-half overtime compensation for work days exceeding eight hours.

"Official transcript of proceedings", Sept. 7-9, 1971, Washington.

Scripture chronology, digested on a new plan, or, The principal facts of sacred history arranged in the order of time from the creation of the world to the destruction of Jerusalem : for the use of schools and young persons.

Includes bibliographical references.

The answer of Mr. Sullivan, to the letter and mis-statements of the Hon. Cadwallader D. Colden, in his "Brief exposition" of himself as the advocate of monopoly. The unconstitutionality or limitation of the monopoly demonstrated. The bad policy and injurious effects of it on the community exposed. The legality of an extension of the term of time of a patent when for the good of a state; and the just views and claims of patentees in steam navigation fully explained.

Pages 29-34 contain "Mr. Duer's opinion on the claim of Mr. Sullivan as a patentee, to navigate with steam boats, the waters of the state of New-York."

Fourth report of the Committee on economy of time in education,

Includes bibliographies.

Visit for a week; or, Hints on the improvement of time, containing, original tales, entertaining stories, interesting anecdotes, and sketches from natural and moral history. To which is added, a poetical appendix, designed for the amusement of youth. Embellished with an elegant frontispiece.

Cf. Welch, d'A. A. A bibliography of American children's books printed prior to 1821. Worcester, 1972, 979.1.

Acta regia : or, an historical account, in order of time, not only of those records in Rymer's Foedera, on which Mons. Rapin has grounded his History of England; but of several grants from the Crown, Summons's to Parliament and Convocation, royal mandates to the clergy and laity for general masses, subsidies, etc. Proclamations and memorials of divers kinds, conge d'elires, dispensations for marriages, and numerous other publick acts relating to particular families, and our own domestick affairs: from the reign of King Henry the First, to that of King Charles the First. Which never yet appear'd elsewhere in the English tongue: and which are absolutely necessary to be known by all that read Rapin's, or any other history of England /

Includes index.

Practicality of time-optimal two-qubit Hamiltonian simulation

What is the time-optimal way of using a set of control Hamiltonians to obtain a desired interaction? Vidal, Hammerer, and Cirac [Phys. Rev. Lett. 88, 237902 (2002)] have obtained a set of powerful results characterizing the time-optimal simulation of a two-qubit quantum gate using a fixed interaction Hamiltonian and fast local control over the individual qubits. How practically useful are these results? We prove that there are two-qubit Hamiltonians such that time-optimal simulation requires infinitely many steps of evolution, each infinitesimally small, and thus is physically impractical. A procedure is given to determine which two-qubit Hamiltonians have this property, and we show that almost all Hamiltonians do. Finally, we determine some bounds on the penalty that must be paid in the simulation time if the number of steps is fixed at a finite number, and show that the cost in simulation time is not too great.