FREE BOOKS

Author's List




PREV.   NEXT  
|<   218   219   220   221   222   223   224   225   226   227   228   229   230   231   232   233   234   235   236   237   238   239   240   241   242  
243   244   245   246   247   248   249   250   251   252   253   254   255   256   257   258   259   260   261   262   263   264   265   266   267   >>   >|  
e were prepared, and who had personally witnessed our former difficulties, was present during some of these experiments. Our own instrument being placed in his hands (Nov. 10th to 19th) for another purpose, he spontaneously re-polished the apparently faultless agate-bearings. To my great astonishment, the inconsistencies of every kind have nearly or entirely vanished. On raising and lowering the needles, they return to the same readings, and the dips with the same needle appear generally consistent.' Some practical details of the polishing process by which this result had been secured are then given.--After numerous delays, the apparatus for the self-registration of Spontaneous Earth Currents was brought into a working state in the month of March. A description of the arrangement adopted is given in the Report.--'All Chronometers on trial are rated every day, by comparison with one of the clocks sympathetic with the Motor Clock. Every Chronometer, whether on trial or returned from a chronometer-maker as repaired, is tried at least once in the heat of the Chronometer-Oven, the temperature being usually limited to 90 deg. Fahrenheit; and, guided by the results of very long experience, we have established it as a rule, that every trial in heat be continued through three weeks.'--'The only employment extraneous to the Observatory which has occupied any of my time within the last year is the giving three Lectures on the Magnetism of Iron Ships (at the request of the Lords of the Committee of Council on Education) in the Theatre of the South Kensington Museum. The preparations, however, for these Lectures, to be given in a room ill-adapted to them, occupied a great deal of my own time, and of the time of an Assistant of the Observatory.'--'Referring to a matter in which the interests of Astronomy are deeply concerned, I think it right to report to the Visitors my late representation to the Government, to the effect that, in reference to possible observation of the Transit of Venus in 1882, it will be necessary in no long time to examine the coasts of the Great Southern Continent.'" Of private history: "There were the usual visits to Playford at the beginning and end of the year.--From June 18th to 26th I was on a trip in Wales with my sons Hubert and Osmund.--From Sept. 6th to Oct. 2nd I was staying with most of my family at Portinscale near Keswick: we returned by Barnard Castle, Rokeby, &c."
PREV.   NEXT  
|<   218   219   220   221   222   223   224   225   226   227   228   229   230   231   232   233   234   235   236   237   238   239   240   241   242  
243   244   245   246   247   248   249   250   251   252   253   254   255   256   257   258   259   260   261   262   263   264   265   266   267   >>   >|  



Top keywords:

Lectures

 

occupied

 

Observatory

 

returned

 
Chronometer
 

Referring

 

Kensington

 

Museum

 
preparations
 

Theatre


adapted
 
Assistant
 

employment

 

extraneous

 

experience

 

established

 

continued

 

request

 

Committee

 

Council


matter
 

giving

 

Magnetism

 

Education

 

Osmund

 

Hubert

 
visits
 
Playford
 

beginning

 
Barnard

Keswick

 

Castle

 
Rokeby
 

Portinscale

 

staying

 
family
 
history
 

Government

 

representation

 

effect


reference

 

Visitors

 

report

 
deeply
 

Astronomy

 
concerned
 

observation

 

Transit

 

Southern

 
Continent