The microscopist : a manual of microscopy and compendium of the microscopic science : micro-minerology, micro-chemistry, biology, histology, and pathological histology (1877)
Wythe, J. H. (Joseph Henry), 1822-1901 · Philadelphia : Lindsay & Blakiston · leaf 270
Fig. 180. … Refractive bodies in the rods and cones. Cortis organ, from above. Fig. 181.
Microscopy · Histology · Microorganisms
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