724 THE RAMSDEN DIVIDING ENGINE. 



Tke numbers of the tablet are as follows : 



[The word "' degrees " is used to represent the units of the division of 480.] 



* The sixteenth day, for 224° of advance, ii becomes obscure and retrogrades, 

 t The thirtieth day the moon is the god Anu. 



S. 162. 



OBVERSE 



Fig. 1.— Babylonian Planisphbbe. 

 FRAGMENT OF PLANISPHERE IN THE BRITISH MUSEUM. 



Figure 1 represents a small fragment of a planisphere in the British 

 Museum (S. 1G2). It contains two compartments, each of which is char- 



