724 



ALPHABETICAL INDEX. 



PAGE 



636, 637 



Catharinenburg, Hourly corrections Periodic Var. Temperature 

 Gentifrade degrees, expressed in equal number of degrees of Fahrenheit . 35 

 " " " " " Reaumur . 34 



" Scale, compared with Reaumur's and Fahrenheit's, full degrees 



from +100° to +50° . . . . .10 



" " converted into Fahrenheit, tenths of degrees from +50° to 



—54°, and from +100° to +89° . 25 



« " " " Reaumur, tenths of degrees from +40° 



to —40° . . . . .28 



Centimetres (rain measure), from English Inches .... 201 



" " " " French Inches and Lines . . . 202 



" " " into English inches .... 200 



" " " " French Inches and Lines . . . 200 



Christiania, Hourly corrections Periodic Var. Temperature . . . 641 



Coefficients of Hourly Corrections, Berghaus .... 418 



Column of ail-, Height corresponding to a Millimetre, in Metres . . 427 



" " same at different Temperatures and Elevations . . 429 



" " equivalents of Paris Lines, in French Feet . . . 427 



" " " " tenths of an inch, in English Feet . . 427 



" " same at different Temperatures and Elevations . . 430 



Comparison of Barometrical differences .... 257-261 



'• " different Barometric Scales .... 209-252 



" " measures of length used in measuring altitudes . 449-500 



" " most important measures of Geographical Distances . 501-532 



" " " •' " Geographical Surfaces . 533-564 



« " " " " Length (units) . . . 499 



« " " " " Surface (units) . . . 564 



" " Quantities of Rain-water, different measures . . 200-203 



" *' Standards of Length of England, France, Belgium, Prussia, 



Russia, India, and Australia .... 709 



Constants of Greenwich observations, Hygrometric Tables based on them 137-182 



" " Laplace, Hypsometrical Tables based on them . . 347-409 



" " Regnault, Hygrometric Tables based on them . . 44-129 



Copenhagen, Monthly corrections Non-periodic Var. Temperature . . 669 



Correction of Barometrical observations for capillary action . . 335-340 



" Horary, coefficients of Berghaus . . . . .418 



" " old French Measures . . . . .419 



" hypsometric, for curvature and refraction .... 434 



" of Time from Solar observation, to obtain True time of Clocks . 697 



Corrections, for Half-sums of Temperatures at Geneva and St, Bernard, Plan- 



tamour ....... 420 



" Horary, to be applied to obtain True mean Barometric Pressui-e, 



Greenwich ...... 432 



" " to be applied to obtain True mean Barometric Pressure, 



Philadelphia . . . . . .431 



