La valeur des petites inventions. De nouveaux livres et de publications. Cela semble être une tentative de galvaniser une nouvelle vie à la moribonde en verre bleu mania grâce à la production de certains avantages allégués à l'valable cette fois supposé être dérivé de verre rouge. Le sens du devoir de nos lecteurs nous a poussé à consacrer une partie tout à fait perdre du temps à l'examen de ce travail que nous avons maintenant à reléguer la corbeille avec la conviction qu'il contient de plus profond bosh qu'il ne l'a jamais été notre malheur de trouver en si peu de pages-Pleasonton's book pas exceptés. C'est un autre de ces très
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The Value of Small Inventions. NEW BOOKS AND PUBLICATIONS. This appears to be an attempt to galvanize new life into the moribund blue glass mania through the production of some alleged benefits to in valids supposed this time to be derived from red glass. A sense of duty to our readers has impelled us to devote some utterly wasted time to the examination of this work which we now consign to the waste basket with the conviction that it contains more profound bosh than it has ever been our misfortune to find in so few pages—Pleasonton's book not excepted. This is another one of those very valuable digests of special classes of inventions several of which works have already been prepared by gentle men connected as are the present authors with the United States Patent Office. We have no doubt but that this volume will prove exceedingly useful to inventors manufacturers and patent experts interested in Its subject-matter. It is admirably compiled and all the drawings are given complete on a reduced scale. We should like to see more digests of this work on car couplers for a long time. This volume purports to be a complete history of the progress of science and industry for the past year. It consists first of a series of summarized reviews by Professor Barker Dr. Dana Professor Holden and others and second of a compilation of receipts mostly from technical periodicals. DECISIONS OP THE COURTS. Supreme Court of the United States. [Appeal from the Supreme Court of the District of ColumbiaDecided October term 1876. The powers of the supreme court of the District of Columbia in patent cases are the same as those of the circuit courts of the united States. Upon a bill in equity for the infringement of a patent it is a matter of discretion and not of jurisdiction whether a case shall be first tried at of equity in patent cases are much less disposed than the English cour:s are to send parties to a jury before assuming to decide upon the merits. The jurisdiction of the circuit
