390 Observations of the Transit of Venus. 



the 3d contact was finely seen. The 4th contact was interfered 

 with by the haze and clouds. 



For assistance during the transit, I am much indebted to 

 the civil-engineering students of the class of '83, School of 

 Mines. 



Note 1. — The contact-times (corrected) differ sliglitly from the times 

 given in the "Transactions," owing to data lately received in regard to the 

 Washington time-signals. 



Note 2. — The peculiar marking on Venus's disc, when near 3d contact, 

 reminds me of the drawings of the markings on .Jupiter's fourth satellite, 

 only there we have the light border on dark ground. (See Webb's 

 " Celestial Objects," p. 168, 4th edition.) 



J. K. R. 



ADDENDUM. 



I have received the following data from an amateur observer in this city, 

 Judge Addison Brown, 233 East 48th Street. 



Contacts. 



Observed 



Time. 



Corrected. 





I, 



jy I not yet, 

 ^^' f past, 



h. 

 9 

 9 

 9 



m. 

 11 

 31 

 31 



s. 

 21 

 40 

 50 



h. 

 9 

 9 

 9 



m. s. 

 8 38 



28 57 ) 



29 7i 



^9 



29 2 



