Dec. 21, 1888.] 



SCIENTIFIC NEWS. 



619 



Fig. 4. — Celestial Sphere (6 ft. in Diameter). 



which he observed up to the end of the sixteenth century. 

 They only differfrom modern instruments because in these 

 latter the sights have been replaced by telescopes which 



the Chinese do not want, and of which they have no need- 

 Father Verbiest, the second creator of the Observatory 

 of Pekin, died in that city exactly two centuries ago. 



Fig. 5.— Armillary Sphere Constructed in the 13TH Century. 



