APPENDIX. 



APPENDIX I. EXTRACT from INSTRUCTIONS to OBSERVERS. 



(Instructions were prepared in considerable detail for all the circumstances in which they 

 appeared necessary, but I confine myself in the following extract to the two paragraphs which 

 applied to the actual observation.) 



Section (X.), Article 1 1 : 



" The record of observation will be made thus : 



" For a micrometer-observation, the observer will give the word ' now ' or other sudden signal, 

 for time ; the assistant at the clock will enter the time ; the observer will give the micrometer- 

 reading, and the assistant will write down the micrometer-reading. 



" For the observation of internal contact, where two or three phenomena may present themselves 

 at intervals of time too small to admit of writing at length, the observer will simply give ' now ' 

 for a time to be recorded, and at next phenomenon will simply give ' now,' the time of which is to 

 be recorded in the book, leaving a gap of several lines ; and so on, as often as may be necessary. 

 When the pressure of phenomena ceases, the observer is to give from memory the details of the 

 phenomenon to which each time-entry applies, and the assistant is to enter them in their proper 

 places." 



APPENDIX II. CORRECTIONS to the TABULAR RIGHT ASCENSION of the MOON. 



(Major Tupman examined most carefully all the observations of the Moon made at. the principal 

 Observatories of Europe, through the time included in the observations connected with the Transit 

 of Venus, and exhibited in a graphical form in the Monthly Notice of the Royal Astronomical 

 Society for March 1877, vol. 37, page 256, the corrections to the R.A. and N.P.D. of the Moon 

 printed in the Nautical Almanac. The corrections to R.A. are measured from Major Tupman's 

 curves, and are exhibited numerically in the following table. They have been used in the 

 reductions throughout by Major Tupman.) 



3x 



