Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . Fig. 113. Schizonema Grevillei. a x 5. b x 400. c x ioD. out. Schizonema Grevillei (fig. 113) is one of elevenBritish species. Micromega has thevalves also boat-shaped, withthe valves arranged in the same manner as in. Fig. 114. Micromega Nat. size, b x loo. c x 4C0. Schizonema, but the thread-like tubes are unitedinto a flat, membranaceous, leaf-like frond. We have upwards of twenty British species, [of whichthe one selected for illustration is Micromega helmin-thosu
Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . Fig. 113. Schizonema Grevillei. a x 5. b x 400. c x ioD. out. Schizonema Grevillei (fig. 113) is one of elevenBritish species. Micromega has thevalves also boat-shaped, withthe valves arranged in the same manner as in. Fig. 114. Micromega Nat. size, b x loo. c x 4C0. Schizonema, but the thread-like tubes are unitedinto a flat, membranaceous, leaf-like frond. We have upwards of twenty British species, [of whichthe one selected for illustration is Micromega helmin-thosum (fig. 114). The genera which we have illustrated in thepresent and two preceding numbers, constitute thegroup of Navicular Diatoms in which the valveshave similar ends and a median longitudinal line,and are either linear or quadrangular in the frontview. This group is called Naviculeje. The Britishspecies are enumerated in Gray & Carruthers Handbook of British Alga?, page 104 to page 116. CADDIS-WORMS. A BOUT this time last year I derived so much-*-*- pleasure from a few caddis larva?, that Ishould like to induce any who have never triedsuch experiments to do so, promising them a last-ing fund of enjoyment. In the Scientific Sum-mary of Popular Science Review for January,1864, was an account of experiments made by M
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