The Annals and magazine of natural history; zoology, botany, and geology . Fig. 1. a, head ; b, stem; c, base. Fig. 2. Aggregation of linear spi-cules forming the stem. Fig. 3. Interior of the head to show the radiatingbundles. Fig. 4. Spicules implanted perpendicularly upon the head andbase. Fig. 5. Spicules of the radiating bundles. Fig. 6. Spinous spiculesof the sarcode of the stem. Fig. 7. Spicules of the stem or axis. 38 Dr. J. V. Barboza du Bocage on Hyalonema boreale. communicate to you, because they completely change my firstimpression. The axis or stem of the sponge is composed of an
The Annals and magazine of natural history; zoology, botany, and geology . Fig. 1. a, head ; b, stem; c, base. Fig. 2. Aggregation of linear spi-cules forming the stem. Fig. 3. Interior of the head to show the radiatingbundles. Fig. 4. Spicules implanted perpendicularly upon the head andbase. Fig. 5. Spicules of the radiating bundles. Fig. 6. Spinous spiculesof the sarcode of the stem. Fig. 7. Spicules of the stem or axis. 38 Dr. J. V. Barboza du Bocage on Hyalonema boreale. communicate to you, because they completely change my firstimpression. The axis or stem of the sponge is composed of an aggre-gation of linear spicules. I thought at first that each of thesespicules extended uninterruptedly, like those of Hyalonema^from the base to the apex; but I have now ascertained thatthese spicules are, on the contrary, short in proportion to thedimensions of the axis, and that it is by their regular aggre-gation that this axis is formed. To make myself more intel-ligible, I will say that the axis does not at all resemble thatof Hyalonema^ but is constituted as in f
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
