Published online by Cambridge University Press: 15 May 2009
The material on which this enquiry is based consisted of tuberculous tissue, pus, or fluid obtained from the sources specified in Table II, pp. 260–268.
page 257 note 1 In 23 of these negative cases, egg tubes were inoculated from the spleens, 40 in all, of guinea-pigs killed six weeks after intraperitoneal inoculation with original material. The tubes remained sterile in every instance. This precaution was taken since tubercle bacilli of reduced virulence sometimes fail to produce macroscopic lesions in guinea-pigs, though the bacilli inoculated survive and are recoverable from apparently normal tissues.
page 301 note 1 Subsequently, A. S. Griffith, making an independent investigation of the same virus, has obtained pigmentation on serum.