ORDER OF SEQUENCE 



FOR AN 



ASTRONOMICAL REPORT 



AT 



MAIN OR PRIMARY FIELD-STATIONS. 



Longitude by Telegraph; Latitude by Zenith Telescope, (Talcotfs method.) 



1. Geographical position of station. 



2. Physical-geography details; especially all physical peculiarities. 



3. Meteorological conditions, both general and special; the latter while observa- 

 tions were made. 



4. Description of observatory; including personnel of party, name of telegraph- 

 operator, and name of telegraph-company whose wire has been employed. 



5. Description of instruments used. 



6. Points with which connections were made; nights of observation, and observ- 

 ers; also name of computer or computers. 



7. Tabulation of stars used, and number of observations. 



8. .Instrumental values; circumstances of telegraphic communication, i. e., length 

 of circuit, number of batteries, repeaters, &c. 



9. Uniform tables of time-reductions at receiving-station. 

 10. Uniform tables of time-reductions at sending-station. 



n. Grouping of series of exchange-signals, including means of single and serial 

 results. 



1 2. Personal equation. 



13. Probable error by least squares. 



14. Resulting longitude. 



15. Reduction of the latitude-observations properly grouped, with discussion of 

 results. 



1 6. Resulting astronomical co-ordinates. 



