ASTRONONn 1\ WANSTEAl). 



Hu\c,iiNs' Telescop: 



ioi,4. 



Explanation — fi b. The po'.e or masi. a. Pulley at toj) of pole, c d. Upright carrier niniiliig 

 ill a slot bearing, c. An arm at right angles, to which is attached f f. A platform. 

 S g. Rope attached to each end of the carrier. //. Leaden weight to balance I Cylinder 

 containing the object-glass. K L. Rod affixed lo cylinder. M. Brass ' cup-and-ball ' joint ; 

 the end of the cup to be placed in a hole in the platform ; the ball is attached to the rod K. 

 N. Leaden weight, to which is attached a copper wire running to, L. End of wire, lo which 

 the cord is affixed. O. Tube containing the eye-piece, attached to P Q. A jointed rod. 

 K Handle lield by obserxer. S Small leaden weight. T. A winch for winding the lower 

 end of cord. t< . \ nnm :r with notch for the cord. \' I.. TIil- 'thin silk) cord " filum tenue 

 h.mil)\ciniiMi," X. Rest used lo steady the oljservers hands. Y. Lante-n. 



