für Gerichtsärzte, gerichtliche Chemiker und Pharmaceuten.
Mainz : Zabern, 1865.
Description : [6], 28, 100, [6] p., XVI leaves ; ill., 16 plates, 26 cm.
Photographs : 16 plates of photomicrographs.
Subject : Toxicology -- Methodology.
Microscopes -- Technique.
Cited :
Taureck, Renata, Die Bedeutung der Photographie für die medizinische
Abbildung im 19. Jahrhundert (1980) ; p. 202 :
16 plates of original photomicrographs, each plate mounted with four shots in a 6 cm diameter format on the subject of plant and metal toxins, by Helwig "with a capable photographer."
The enlargements are at most 160 : 1 ; examination also by a lupe is recommended.