No. 13. [From Nature, October 19, 1905, Vol. LXX/I, 

 p. 603.] 



ECLIPSE PREDICTIONS 



IT is always interesting to compare the results of obser- 

 vation with those predicted by calculation. In the case of 

 the recent total eclipse of the sun this is rendered difficult 

 by the want of agreement in the predictions of the two most 

 used authorities, the Nautical Almanac and the Connaissance 

 des Temps. The discrepancies in the predicted duration of 

 totality and of the breadth of the band traced on the earth's 

 surface by the total phase are made apparent in the following 

 table. It is compiled from the table in the Nautical Almanac 

 headed " Limits of total phase of the Solar Eclipse," and the 

 corresponding table in the Connaissance des Temps entitled 

 " Limites de 1'Eclipse totale et Duree de la Phase totale 

 sur la Ligne centrale." Entries for as nearly as possible 

 the same time in each table have been taken and are 

 placed together : 



