See page 273 (or Microscope. 



The following objectives are specially suited for mineralogy : 



Nominal Focus. 



E. .. .. .. .. I in. 



F. .. J 



G .. | .. 



H. T V 



Miner alogical Accessories for Microscope No. 1373. 



I. Ocular fitted with Bertrand's quartered quartz, for extremely accurate reading 



J. Quartz wedge 



K. Gypsum plate 



L. Mica undulation plate (J wave) in vulcanite 



M. Klein's quartz plate 



SWIFT'S NEW METALLURGICAL MICROSCOPE 



Designed from suggestions given by Prof. HERBERT JACKSON, King's College, London, 



and BERTRAM BLOUNT, Esq., F.I.C. 



1374 



1374 1 Microscope, Swift's Metallurgical, with one ocular, without objectives, in mahogany 



cabinet .. .. .. .. .. .. .. 13 !0 o 



For objectives see Nos. 1399 and 1400. 

 A. Collar Adjustment to high-power objectives 



For description see page 275. 



extra 100 



