. Annals of natural history. Natural history; Botany; Zoology; Geology. 148 Miscellaneousr. MISCELLANEOUS. ON SUBSTANCES INCLOSED IN AGATE. To Richard Taylor, Esq. Bulford, June 0, , Sir,—I send you a sketch of some bodies contained in a brownish agate which I have, so nearly resembhng those rejiresented in the plate illustrating the paper by Karl Mueller, , translated and communicated by the Rev. M. J. Berkeley*, that I cannot resist troubling you with my ideas on the nature of those bodies repre- sented in figure 10 of your plate. Many of those in my agate are precisely of similar f
. Annals of natural history. Natural history; Botany; Zoology; Geology. 148 Miscellaneousr. MISCELLANEOUS. ON SUBSTANCES INCLOSED IN AGATE. To Richard Taylor, Esq. Bulford, June 0, , Sir,—I send you a sketch of some bodies contained in a brownish agate which I have, so nearly resembhng those rejiresented in the plate illustrating the paper by Karl Mueller, , translated and communicated by the Rev. M. J. Berkeley*, that I cannot resist troubling you with my ideas on the nature of those bodies repre- sented in figure 10 of your plate. Many of those in my agate are precisely of similar forms, but I have only figured those which illus- trate my idea of their nature. I believe them to be imperfectly formed crystals, probably of red oxide of iron, as their colour is so precisely similar to that substance. No. 1. is, I think, evidently an imperfectly formed octohedron with rounded edges, or rather several imperfect crystals of that form superimposed on each other, as represented at figure 6 and 6 a. The other fi-gures more nearly resemble the figures in your plate. No. 4. shows an imperfect facet, but the lines bounding the angles of the crystal in all the other figures are curvilinear, and give them a rounded appearance. The general description of the bodies seen by M. K. Mueller so nearly tallies with those in my agate, that I can scarcely doubt of their identity. Your obedient servant, A, DESCRIPTION OF WOODCUTS. Figs. 1, 2, 3, 4, 5. Various bodies contained in the agate 7 at B. Fig. 7, A. A band in the agate composed of red matter, evidently of the same substance of which 1, 2, 3, 4, 5 are formed. Figs. 6 and 6 a. represent a crystal which shows some general resemblance to the bodies figured above. ON THE DEVELOPMENT OF THE CRAY-FISH. BY M. JOLY. Encouraged by the Academy of Sciences to continue my re- searches on the freshwater Crustaceans, I first devoted my attention to the embryogeny of the cray-fish, Astacus fluviatilis, Gesner, on * See Annal
Size: 2090px × 1195px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
