Study of the Cholera Vibrio

In this brochure, Dr. Doorenbos, by dividing cholera vibrios into two definite types, viz, the epidemic and the endemic, attempts to reconcile and explain the many diverse and puzzling observations and findings that have been made at different times, and in different countries and circumstances, regarding the cholera vibrio. While most will question the justifiability of this division in the present state of our knowledge, nevertheless the brochure contains much interesting matter both of fact and speculation. Taking certain facts first, Dr. Doorenbos records that agglutination by a high-titre serum as a fundamental diagnostic property of a ' true' cholera vibrio was first laid down by Kolle and Gotshlich in 1903. This choice by Ivolle of an epidemic cholera vibrio as the only true and