1843 April, Isaac Hays (editor), The American Journal of the Medical Sciences, Philadelphia: Lea & Blanchard / London: Wiley & Putnam, & John Miller, № IX, New Series, volume VI (July 1843), “Summary of the Improvements and Discoveries in the Medical Sciences”, ‘Foreign Intelligence’, «Anatomy and Physiology», § 7: ‹Worms in the Blood of a Dog. By MM. Gruby and Delafond.›, page 182:
The diameter of the blood-globules of the dog is from seven to eight millièmes of a millimetre; that of the worm from three to five millièmes. Its size is therefore no obstacle to its circulating everywhere with the blood.
