Figure 21. — Equatorial mounting for a refracting 

 telescope, adjustable for use at any latitude, made 

 by Alvan Clark & Sons, and described by William 

 R. Dawes in the Monthly Notices of the Royal 

 Astronomical Society. From Monthly Notices, 

 vol. 20 (1859-1860), p. 62. 



had belonged originally to Thomas William Webb (q.v. ). The college 

 authorities purchased the telescope in 1886, in preparation for the solar 

 eclipse of that year. 208a Soon thereafter the 5/2 -inch aperture Clark ob- 

 jective was remounted and used in conjunction with a heliostat to feed 



208a Stonyhurst College Observatory, Results of Meteorological, Magnetical and Solar 

 Observations (1886), pp. 6-7. 



284-281 O— € 



91 



