DESCRIPTION, OF PLALE 2ay 
Figs. 1 to 8 represent of natural size certain glasses of unboiled milk described in the text. They are 
examples of the alterations in appearance produced in milk by various different organisms other 
than the Bacterium lactis. From sketches taken October 1, 1877. 
Figs. 9 to 12, camera-lucida sketches, by Mr. Lister, of Bacterium lactis and Torula Cerevisiae on the 
same scale, viz. magnified 1125 diameters. 
For further description, see the plate and the text. 
