Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 577
rs, it is easy, byproperly focussing theMicroscope, to bringeither one of them intodistinct view. From thisvery simple but verybeautiful arrangement, itcomes to pass that theplates of which the entire test is made-up, possessa very considerable de-gree of strength, not-withstanding that… … Transverse Section of medullary por-tion of Spine of Acrocladia, showing itsmore open network. CALCAREOUS SKELETON OF ECHINIDA. 555 its substance. A very beautiful example of the same kind of cal-careous skeleton, having a more regular conformation, is fur-nished by the disk or rosette which is…
Microscopy
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