. Quarterly journal of microscopical science . leaf of Anacharis. 3.—Primitive cell-formation oiArabis alhida, with the rudiments of cellsapi^earing at the apex. 4.—Leaflet of Arabis, with cells in a more advanced stage. 5.—Malformed stellate hair with the protoplasm at the apex, showinga tendency to cell-formation. 6.—Leaflet of Reseda burst at the apex. The exuded mass of protoplasmhaving become filled with cavities. 7.—Primitive cell-formation of leaf of Anethum Foenkulum. 8.—Cells of Anacharis in succeeding stage to Fig. 2. 9.—Cells oi Anacharis in more advanced stage, a. a. Septa of proto
. Quarterly journal of microscopical science . leaf of Anacharis. 3.—Primitive cell-formation oiArabis alhida, with the rudiments of cellsapi^earing at the apex. 4.—Leaflet of Arabis, with cells in a more advanced stage. 5.—Malformed stellate hair with the protoplasm at the apex, showinga tendency to cell-formation. 6.—Leaflet of Reseda burst at the apex. The exuded mass of protoplasmhaving become filled with cavities. 7.—Primitive cell-formation of leaf of Anethum Foenkulum. 8.—Cells of Anacharis in succeeding stage to Fig. 2. 9.—Cells oi Anacharis in more advanced stage, a. a. Septa of protoplasmdividing cells too much elongated into two parts. 10.—Cell excessively elongated with an intermediate mass of protoplasm,a. Cavity formed in protoplasm which expands and divides theoriginal cell-space into three parts. IL—Cells of Anacharis in latest stage of growth. 12.—Group of embryo flowers of Arabis albida. a. b. c. d. g. Succes-sive stages of development, h. Cell prolongations or rudiments ofstellate FHWdii [ 1^ ] A Simple Form of Portable Mtcroscopk, with LkverAdjustment, ivhich may he adapted to several different jnir-poses. By Lionel Beale, , Professor of ]^livsiolo2:yand General and Morbid Anatomy in Kings College,London, The Microscope which I wish to bring under the notice ofthe Society, seems to me to possess some advantages overthose in ordinary use in simplicity of construction, in thenumber of uses to Avhich it may be applied, and in accompanying outline diagrams show the general ar-rangement of the instrument. The telescope stem, a, andhorizontal arm, h, upon which the body, e, is fixed by the aidof a hinge-joint, e, are made of brass tubes, about an inch indiameter. Upon the outside of the stem the stage, f, andmirror, g, are made to slide. The lower part of the stemslides in a tube, /<, provided with a clamp screw, i, so thatthe whole instrument may be arranged in the erect posture atany conve
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