Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...of Calcium Carbonate.--As has been pointed out by Edelhoff and Valetonf there are no calcium oxalate crystals in the tissues of Cansjera, their place being taken by crystalline cystoliths of calcium carbonate. Masses of cal cium carbonate crystals, although rare in young haustoria, are abundant in older ones, being presumably only formed in cells whose activity is on the wane. Thus, certain tracts of cells which are no longer required by the haustorium are noted for their frequent appearance. The crystals occur in the elongating portion of the inner cortex, inside the collapsed layers near the lacunar tissue, in the cortex outside the collapsed layers and, especially, in the ground tissue immediately above the nucleus (Plates VI, IX and XI). They are rarer in the hvpoderm and are not formed in the nuclear tissues. The distribution of these crystal masses is thus mainly cortical, and follows with remarkable fidelity that of the calcium oxalate crystals in the haustoria of Olax scandens (Olax, para. 16). The presence of these bodies has been noted in some forty haustoria, but was probably more widely spread in the original material because many of the sections were mounted in dilute glycerine and lay for some time before examination. In some sections, at least, the crystals have been noted gradually to disappear in this medium. In these cases no definite structure was left behind and no residual basis has been found giving callose reactions (see Plate VI, fig. 2, x, and the description of this figure). Fresh material has not been available for the examination of these bodies, but, from the spirit material at Edelhoff, E., Vergl. Anat. des Blattes der Familie der Olaeineen. Engler, Botan. Jahrb. VIII, 1886-7. f Valeton, Crit. Overz. d....