= Solution
\b[TODO: specimens A–E are missing; their identities and observed characters cannot be recovered from the paper.] The scanned volume supplies no description, illustration, label key, or preserved samples for those five articles. Each identification and its specimen-specific description therefore remains incomplete.
A valid examination of the missing materials would first record each label separately and describe the actual material: whole or powdered form; size and shape; external and cut surfaces; texture and fracture; and any diagnostic <plant> organ or animal structure. For a botanical material, <microscopy> could distinguish <bark>, <wood>, <root (botany)>, <leaf> and <seed> tissues, with suitable reference material and the historical <pharmacopoeia> definition used for comparison. A putative chemical preparation would instead require appropriate <solubility> and reagent tests. No colour, smell, section, chemical reaction, botanical origin or medicinal constituent is asserted for an unseen sample. Historical descriptions involving tasting are documentary evidence, not a method to apply to unknown potentially poisonous materials.
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