PRIVATE JOURNALS. 173 



POLYTECHNISCHES JOURNAL. 



Edited by E. M. DINGLER. Three vols. a year. Augsburg, 1820 to date. 



Vols. I. to CCXVL, 1820 to 1875. 



Index Volumes, (subjects.) Vol. 1. Embracing Vols. I. to 



LXXVIIL-, 1820 to 1840. Vol. 2. Embracing Vols. 



LXXIX. to CLVIIL, 1842 to 1860. Vol. 3. Embracing 



Vols. CLIX. to CXCVIIL, 1861 to 1870. 



POLYTECHNISCHES NOTIZBLATT FUR GEWERBTREIBENDE, FABRI- 

 Kanten und Kiinstler. 



Edited by RUD. BOTTGER. 8vo. Semi-Monthly. Mainz, 1845 to date. 



Vols. XXVIL, XXVIIL, XXIX., 1872, 1873, 1874. Vol. 

 XXX., 1875, January to June. 



POPULAR SCIENCE MONTHLY. 



Conducted by E. L. YOUMANS. Imp. 8vo. Monthly. Two vols. a year. New- 

 York, 1872 to date. 



Vols. I. to V., 1872 to 1874. 

 THE QUARTERLY JOURNAL OF SCIENCE. 



Edited by WILLIAM CROOKES. 8vo. Quarterly. One vol. a year. London, 1864 

 to date. 



Vols. IV., VI. to XL, 1867 to 1874. Vol. XII., 1875, parts 

 1 and 2. 



THE RAILWAY WORLD. In which is incorporated the United 

 States Rail-Road and Mining Register. 



4to. Weekly. Philadelphia, 1875. 

 Vol. L, 1875, No. 21. 



REPERTORIUM COMMENTATIONUM A SOCIETATIBUS LITTERARIIS EDIT- 

 arum. Secundum Disciplinarum Ordinein digessit I. D. 

 Reuss. 



(A valuable collection of the transactions of Philosophical Societies from 

 the earliest times to the date of publication.) 



16 vols. 4to. Gottingen, 1801-1821. 

 Vol. I. Scientia Naturalis. Historia Naturalis Generalis et 



Zoologica. 



Vol. II. Botanica et Mineralogia. 

 Vol. Ill, IV. Chemia ; Res Metallica et Physica. 

 Vol. V. Astronomia. Vol. VI. Oeconomia. 

 Vol. VII. Mathesis ; Mechanica ; Hydrostatica ; Hydraulica ; 



Hydrotechnia ; Aerostatica ; Pneumatica ; Technologia ; 



Architectura Civilis; Scientia Naturalis; Scientia Mili- 



taris. 

 Vols. VIIL, IX. Historia; Historia Subsidia ; Hist. Univer- 



salis ; Hist. Generalis ; Hist. Humani; Hist. Mythica ; Hist. 



Specialis ; Hist. Ecclesiastica ; Hist. Litteraria. 

 Vols. X.-XIII. Scientia et Ars Medica et Chirurgica. 

 Vols. XIV.-XVI. Therapia Generalis et Specialis. 



