440 



SUMMARY OF QUERENT RESEARCHES RELATING TO 



Two additional stages were employed for large or small transparent 

 objects, various condensers being applied beneath. Fifteen simple-lens 

 object-glasses formed the optical battery. 



Charles I. Microscope. — At the recent Stuart Exhibition a Micro- 

 scope exhibited was thus described in the catalogue : — " 389, Microscope, 

 covered with gilt leather, which belonged to Charles I. Lent by Hon. 

 A. Holland Hibbert." 



By the courtesy of the owner we secured a photograph of the Micro- 

 scope, whence our fig. 61 is engraved. The owner informs us that the 



Fig. 61. 



Fig. 62. 



m 



instrument descended to him " from an ancestor, Francis Rogers, for 

 some time Keeper of the Wardrobe to Charles I," 



As Charles I. died in 1647, the Microscope should represent a type 

 of extremely early construction. In our opinion, however, though we 

 have no difficulty in considering the instrument to date from the latter 



