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Recueil de problèmes de géométrie analytique a l'usage des classes de mathématiques, spéciales
78
Proccedflzg-s.
[J. F. 1,,
secondary batteries, electric gas lighting, new methods of X-ray work and a complete chapter on wireless telegraphy. A complete index, contents, list0f illustrations a n d contents of tables have been added. W.
Los l)ischarges Electriques dans les Oaz.
Par J. J. Thomson, P.S.C., F.R.S. Ouvrage traduit de l'Anglais avee des Notes, par Louis Barbillion, Dr. es Be., et un preface par Ch. Ed. Guillaume. P a r i s : Gauthier-Villars 19oo.
This translation of l)r. T h o m s o n ' s " Electrical Discharges in Cases" should be readily appreciated by F r e n c h readers. The work is well known and esteemed as a scientific classic by E n g l i s h students of electrical science. W.
Eleklrische Uer6rauchsmesser der JVeuzeit fiir den p r a k t i s e h e n Gebraueh dargestellt von J o h a n n e s Zacharias, Ingenieur. Mit I94 Abbildungen im T e x t und zahlreichen Tabellen. Halle a/S. Verlag yon \Vilhelm Knapp, I9or. (I<.M., I5.) T h e literature r e l a t i n g to electric meters is e x t r e m e l y meagre, and the present work will u n d o u b t e d l y prove of m u c h value to electrical engineers, The compilation of patent data appended to t h e descriptive portion of the work is a feature which will be h i g h l y appreciated by all wllo have occasion to look into the history of the subject. W.
Recueil de Problgmes de G{o~ndlrie Mnalytique a l'usage des Classes de 3(alhL ~naliques 5"pbciales. Solutions des Probl~mes d o n n f s attx Concours d'admis%ion ~ l'I~cole Polytechnique de i86o a 19oo. Par F r a n c o i s Michel, Aneien I~l~ve de l'Eeole Polytechnique, Inspecteur de i ' E x p l o i t a t i o n aux Chemins de fer du Nord. Un volume in-8, avec 60 figures. ~9eo. 6 francs. P a r i s : Librairie Gauthier-Villars. Tills volume contains t h e problems and t h e i r solution w h i c h had been given to t h e candidates for admission in t h e fdcole Polytecl~nique from the years 186o to 19oo inclusive. W.
Franklin Institute. [Proceedings o f lhe slated meeting~held Wednesday, June z9, z9oz. ] I~ALL OF TH~ FRANKLIN INSTI'~UTE, PHILADELPHIA, J u n e 19, 19o1, President JOHN BItKKINBINE ill the chair. Present, 84 m e m b e r s a n d visitors. Additions to m e m b e r s h i p since last m o n t h , 12. T h e special committee n a m e d at t h e previous meeting, to prepare a memorial of the late David S h e p h e r d Holman, o n e time Actuary of the Franklin Institute, presented a report, t h r o u g h its Chairman, !VIr. L. E. Levy, which was accepted and t h e committee discharged w i t h t h a n k s .
Proccedflzg-s.
[J. F. 1,,
secondary batteries, electric gas lighting, new methods of X-ray work and a complete chapter on wireless telegraphy. A complete index, contents, list0f illustrations a n d contents of tables have been added. W.
Los l)ischarges Electriques dans les Oaz.
Par J. J. Thomson, P.S.C., F.R.S. Ouvrage traduit de l'Anglais avee des Notes, par Louis Barbillion, Dr. es Be., et un preface par Ch. Ed. Guillaume. P a r i s : Gauthier-Villars 19oo.
This translation of l)r. T h o m s o n ' s " Electrical Discharges in Cases" should be readily appreciated by F r e n c h readers. The work is well known and esteemed as a scientific classic by E n g l i s h students of electrical science. W.
Eleklrische Uer6rauchsmesser der JVeuzeit fiir den p r a k t i s e h e n Gebraueh dargestellt von J o h a n n e s Zacharias, Ingenieur. Mit I94 Abbildungen im T e x t und zahlreichen Tabellen. Halle a/S. Verlag yon \Vilhelm Knapp, I9or. (I<.M., I5.) T h e literature r e l a t i n g to electric meters is e x t r e m e l y meagre, and the present work will u n d o u b t e d l y prove of m u c h value to electrical engineers, The compilation of patent data appended to t h e descriptive portion of the work is a feature which will be h i g h l y appreciated by all wllo have occasion to look into the history of the subject. W.
Recueil de Problgmes de G{o~ndlrie Mnalytique a l'usage des Classes de 3(alhL ~naliques 5"pbciales. Solutions des Probl~mes d o n n f s attx Concours d'admis%ion ~ l'I~cole Polytechnique de i86o a 19oo. Par F r a n c o i s Michel, Aneien I~l~ve de l'Eeole Polytechnique, Inspecteur de i ' E x p l o i t a t i o n aux Chemins de fer du Nord. Un volume in-8, avec 60 figures. ~9eo. 6 francs. P a r i s : Librairie Gauthier-Villars. Tills volume contains t h e problems and t h e i r solution w h i c h had been given to t h e candidates for admission in t h e fdcole Polytecl~nique from the years 186o to 19oo inclusive. W.
Franklin Institute. [Proceedings o f lhe slated meeting~held Wednesday, June z9, z9oz. ] I~ALL OF TH~ FRANKLIN INSTI'~UTE, PHILADELPHIA, J u n e 19, 19o1, President JOHN BItKKINBINE ill the chair. Present, 84 m e m b e r s a n d visitors. Additions to m e m b e r s h i p since last m o n t h , 12. T h e special committee n a m e d at t h e previous meeting, to prepare a memorial of the late David S h e p h e r d Holman, o n e time Actuary of the Franklin Institute, presented a report, t h r o u g h its Chairman, !VIr. L. E. Levy, which was accepted and t h e committee discharged w i t h t h a n k s .