. The microscope and its revelations. 195.—Powell and Lcalands portable microscope (184<si. one of the most rigid of this class of microscope which we have seenor used ; this instrument is sold for twenty-five shillings. But themaker has adopted Mr. Nelsons plan, using a Steinheilmagnifier tobe mounted as a sub-stage condenser, and if a simple iris diaphragm K 2. -Swiff, porl ible histological microscope (1894). POKTABLE MICROSCOPES 245 be used with this, there are very few but will be astonished at thebeautiful results attainable. Certainly, since the last edition of thisbook was pub
. The microscope and its revelations. 195.—Powell and Lcalands portable microscope (184<si. one of the most rigid of this class of microscope which we have seenor used ; this instrument is sold for twenty-five shillings. But themaker has adopted Mr. Nelsons plan, using a Steinheilmagnifier tobe mounted as a sub-stage condenser, and if a simple iris diaphragm K 2. -Swiff, porl ible histological microscope (1894). POKTABLE MICROSCOPES 245 be used with this, there are very few but will be astonished at thebeautiful results attainable. Certainly, since the last edition of thisbook was published, large and successful efforts have been made tosupply to those who need them cheap but thoroughly good micro-scopes. Portable Microscopes.—Microscopes that may be readily takenfrom place to place, and which are yet provided with the arrange-ments required for usingthe principal apparatus, areof importance in some in-vestigations, and are de-sirable by the majority ofthose who have a livinginterest in microscopicwork. The earliest and stillthe best form of this kindof microscope was made 1 >yPowell and Lealand. Asopened for use it is illus-trated in fig. 195 ; but thetripod foot folds into whatbecomes practically a singlebar, and is bent by meansof a joint to occupy theleast space. The body un-screws, and the whole liesin a very small space, givingat th
Size: 1245px × 2007px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
