Alaska volume 141
Alaska volume 141
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In our eReader you can find the full English version of the book. Read Alaska volume 141 Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Alaska volume 141
What reading level is Alaska volume 141 book?
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The original description of P. Hexactis was as follows: " Disk broad, very high, evenly convex, with a rather large central opening surrounded by circles of prominent, imbricated, and webbed spines. Rays six, short, broad, tapered to blunt tips, their lateral margins convex. Lesser to greater radii, about as i to 1. 5. Lesser radii, 22 mm. ; greater radii, 32 mm. To 35 mm. , in the alcoholic specimen ; height of disk, 30 mm.
" The surface of the disk is covered with very numerous small spinules..., covered more or less completely with a thick skin-like membrane, and arranged in irregular, divergent groups.
" The integument between the spinules is thick, smooth, firm, and everywhere perforated by numerous very small, round pores.
" In each interradial region there is a narrow, radiating groove, lined with thick naked integument, destitute both of spinules and pores, but showing a wrinkled surface. These grooves commence at about one-fourth the distance from the dorsal center to the margin.
What to read after Alaska volume 141?
You can find similar books in the "Read Also" column, or choose other free books by Harriman Alaska Expedition 1899 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The original description of P. Hexactis was as follows: " Disk broad, very high, evenly convex, with a rather large central opening surrounded by circles of prominent, imbricated, and webbed spines. Rays six, short, broad, tapered to blunt tips, their lateral margins convex. Lesser to greater radii, about as i to 1. 5. Lesser radii, 22 mm. ; greater radii, 32 mm. To 35 mm. , in the alcoholic specimen ; height of disk, 30 mm.
" The surface of the disk is covered with very numerous small spinules..., covered more or less completely with a thick skin-like membrane, and arranged in irregular, divergent groups.
" The integument between the spinules is thick, smooth, firm, and everywhere perforated by numerous very small, round pores.
" In each interradial region there is a narrow, radiating groove, lined with thick naked integument, destitute both of spinules and pores, but showing a wrinkled surface. These grooves commence at about one-fourth the distance from the dorsal center to the margin.
What to read after Alaska volume 141?
You can find similar books in the "Read Also" column, or choose other free books by Harriman Alaska Expedition 1899 to read onlineMoreLess
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