. Science-gossip . raphy the old-fashioned letterf for our now familiar s. When the modernreader finds pages of old-style with which he is notfamiliar, he soon tires of the reading. For in-stance : All fcholarly fifhermen know that charm-ing idyell of Aufonius on the Mofelle, is antique of indoor views. The illustration given of the Naveof York Minster is good, the lights and shadowsbeing well blended. The view of an interior of aroom is also satisfactory ; far more so than theusual attempts to picture such difficult subjects. Diagramettes for use as Students Notes and W. H. Knight
. Science-gossip . raphy the old-fashioned letterf for our now familiar s. When the modernreader finds pages of old-style with which he is notfamiliar, he soon tires of the reading. For in-stance : All fcholarly fifhermen know that charm-ing idyell of Aufonius on the Mofelle, is antique of indoor views. The illustration given of the Naveof York Minster is good, the lights and shadowsbeing well blended. The view of an interior of aroom is also satisfactory ; far more so than theusual attempts to picture such difficult subjects. Diagramettes for use as Students Notes and W. H. Knight. (London : Chapman and Hall.)Price IS. This is a series of diagrams with explanatoryinformation upon hygienic subjects, ranging from acountry cottage well to the evils of tight-lacing andbadly - shaped boots. Much time and evidentattention have been expended on these diagramswhich cannot fail to impress many people with thenecessity for attention to simple necessities forsustaining good health. 222 Mediums for Mounting.—Twenty years ago, orthereabouts, when I was working at microscopy, adifficulty was experienced in finding a mediumwherein certain objects, such, for instance, as palatesof moUusca, would not be completely overpowered,as it were, with light; that is, were made so trans-parent that their proper form could not be distin-guished when magnified. Canada balsam was thenalmost only used; and gum dammar, which madematters worse, was just beginning to come intofashion. The general law of microscope vision that an object becomes more distinctly visible the moreits refractive power differs from that of the medium inwhich it is mounted was then, if not actually for-mulated, at least practically recognized by mounters,professional or otherwise. In most cases there wasno other resource but to mount the object dry,which of all other means is at once the most diffi-cult and the most unsatisfactory. Judge then ofthe delight which thrilled the microscopical wor
Size: 2458px × 1016px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
