Content Description This collection includes two manuscripts about biological agglutination with no author information. The manuscripts are handwritten in ink on A5 size paper. The first manuscript, titled "Agglutination" is 41 pages with 4 additional pages of footnotes and sources. The second manuscript, titled "The Agglutination Reaction in Paratyphoid Infections" is 27 pages with a single page bibliography. The third manuscript is 9 pages of notes on the article "Variation in Clumping of Typhoid Bacilli"...