THE EDUCATIONAL REFLECTING TELESCOPE, 
with Silvered Glass Mirror 4J in. in diameter, 5 ft 
focus, mounted on a Parallactic Stand for following 
the heavenly bodies with one motion by means of 
endless driving-screw and Hook’s joint, with two eye! 
pieces. 
PRICE £22. 
Powers can he used up to 400 diameters o; 
many stars with advantage. 
A REDUCED LIST OF PRICES OF 
TELESCOPES FREE, 
Sixth Edition, with much new matt( 
A PLEA for REFLECTOR 
being a Description of Asti 
nomical Telescopes, wi 
silvered glass specu 
and instructions 
using and adjusti 
them, with many 111 
trations and Colom 
Frontispiece of Jupif 
BY 
JOHN BROWNING, F.R. 
One Shilling , post fr 
JOHN BROWNING, 
INSTRUMENT MAKER TO H.M. GOVERNMENT 
63 STRAND, W.C., LONDON. 
MICROSCOPES, SPECTROSCOPES, SPECTACLES, <Src„ &c. 
