. The microscope and its revelations. orn, xvii.; Mr. G. Busks(nt«l(/iir f tin- Mariiii Jl//.-;oi< ui tin- , and Bijdragen tut <!<•l)irr];nml<\ \i. For a general a,i-c(iunl sec LrolVssor K;i\ LankestersarticlePolyzoa,ill the Dtli edition of the Encyclopedia l!n/<i 11 niin, and Dr. Mariners work alreadyreferred (,,.. AVICULARIA AND VIBRACULA 911 tactile organ, being brought forwards when the month is open, sothat the bristles project beyond it, and being drawn back when themandible closes. The avicularia keep up a continual snapping actionduring the life of the polyzoary; and the
. The microscope and its revelations. orn, xvii.; Mr. G. Busks(nt«l(/iir f tin- Mariiii Jl//.-;oi< ui tin- , and Bijdragen tut <!<•l)irr];nml<\ \i. For a general a,i-c(iunl sec LrolVssor K;i\ LankestersarticlePolyzoa,ill the Dtli edition of the Encyclopedia l!n/<i 11 niin, and Dr. Mariners work alreadyreferred (,,.. AVICULARIA AND VIBRACULA 911 tactile organ, being brought forwards when the month is open, sothat the bristles project beyond it, and being drawn back when themandible closes. The avicularia keep up a continual snapping actionduring the life of the polyzoary; and they may often be observed tolay hold of minute worms or other bodies, sometimes even closingupon the beaks of adjacent organs of the same kind, as shown at the pedunculate forms, besides the snapping action, there is acontinual rhythmical nodding of the head upon the stalk ; and fewspectacles are more curious than a poi-tion of the polyzoary ofHinjnil avicularia (a very common British species) in a state ofactive vitality, when viewed under a power sufficiently low to allowa number of these bodies to be in sight at once. It is still verydoubtful what is their precise function in the economy of the animal—whether it is to retain within the reach of the ciliary current bodiesthat may serve as food, or whether it is. lik
Size: 1375px × 1818px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
