( 95 ) 



DAILY RATES FROM PERIODS OF THREE MONTHS. 



1903 May 15— Aug. 4 

 Aug. 4— Nov. 5 

 Nov. 5— Jan. 29 



1904 Jan. 29-May 12 

 May 12— Aug. 1 

 Aug. 1— Nov. 5 

 Nov. 5— Jan. 21 



905 Jan. 21— Apr. 21 

 Apr. 21— June 27 

 June 27 — Nov. 4 

 Nov. 4— Febr. 24 

 1906 Febr. 24— May 6 

 May 6— July 19 



D. Rate Hewitt 

 red. to 20^ 



D. Rate Hohwii 



s 



— 1.08 



— 0.90 



— 0.80 



— 0.51 



— 0.50 



— 0.GG 



— 0.93 



— 0.94 



— 0.82 



— 0.72 



— 0.76 



— 0.90 



— 1.29 



s 



— 0.49 



+ 0.07 

 + 0.G5 

 + 0.55 

 + 0.72 

 + 0.34 

 + 0.91 

 + 0.10 



— 0.05 



— 0.50 



— 0.90 



— 0.99 



— 1.51 



The values of this table also show the greater regularity of the 

 chronometer of Hewitt for which only the last rate shows a 

 greater deviation. The rate of that of Hohwü seems tolerably 

 constant during the period 1903 Nov. 5 — 1905 Jan. 21 for which 

 the mean rate amounts to -\- s . 61. 



From the differences between the single rates in this period and their 

 mean we find, again disregarding the lengths of the intervals: 



M.E. Daily rate Hohwü ± 0*,30 

 still greater than for Hewitt. But on the other hand the large 

 coefficient of temperature of the latter is a disadvantage for periods 

 for which the temperature is not accurately known. 



III. New determination of the latitude of Chiloango. 



In the months of November and December 1903 I made a new 

 determination of the latitude of Chiloango, again by altitudes observed 

 with my universal instrument, with the only difference that a much 

 greater number of stars was observed, but with only one pointing 

 for each of them at the moment of transit over the meridian. The 

 observations were arranged so that 2 northern and 2 southern stars 



