Blue Vervain, Verbena hastata, occurs broadly in piedmont and mountain areas of Virginia and in a few counties in the coastal plain. Growing 2-6 feet tall, clusters of many pencil-like spikes of small ...

ALLOW me to say a few words on the report of the English Vice-Consul at Ciudad, Bolivar, concerning the efficacy of the Vervain plant as a remedy for yellow fever and black vomit (NATURE, March 21, p.