GENERAL INDEX. 



Cailsrulie, South Germany 

 Berlin, Prussia 

 Copenhagen, Denmark . 

 Paris, France 

 Zwanenburg, Holland . 

 London, England . 

 Kinfauns Castle, Scotland 

 Tornea, Finland . 

 Albany, N. Y. 

 Salem, Mass. 

 Eeikiavik, Iceland 

 Godthaab, Greenland 



Force of Vapor and Relative Humidity. 



XCYIII. Greenwich, England, Force of Vapor, by Glaisher 

 XCIX. Greenwich, England, Relative Humidity, by Glaisher 



XXV 



PAGE 



664 

 666 

 669 

 671 

 672 

 674 

 676 

 676 

 677 

 678 

 679 

 679 



683 

 684 



VII. MISCELLANEOUS METEOROLOGICAL TABLES . . 685 



I able I. Positions of the Principal Observatories ..... 689 

 " 11. To convert parts of the Equator in Arc into Sidereal Time, or 



to convert Terrestrial Longitude in Arc into Time . . 693 



" III. To convert Sidereal Time into parts of the Equator in Arc, or 



to convert Time into Terrestrial Longitude in Arc . . 695 



" lY. For converting Sidereal Time into Mean Solar Time, and Mean 



Solar Time into Sidereal Time ...... 696 



" Y. Correction of the Time obtained by observation of the Sun in 



order to have the True Time of the Clock .... 697 

 *' YI. Tables giving the Length of a Degree of the Meridian and of 



the Parallel 698 



" YII. Tables for computing Terrestrial Surfaces .... 703 



" YIII. Comparison of the Standards of Length of England, France, 



Belgium, Prussia, Russia, India, and Australia . . . 709 



" IX. Table for giving the Length of Insolation for any given Latitude 711 



