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Wisconsin State Horticultural Society. 



side by side in rows. It will require 8,000 rows with 16,000 in a 

 row, or 128,000,000 in all. This is the full grown form. The 

 spores are much smaller, if we can realize it. An estimate made 

 bj Dr. Thomas Taylor, Microscopist of the Department of Agri- 

 culture, may help us in this. He states that there are organisms 

 so small that a globe which can pass easily through the eye of a 

 cambric needle would contain 20,000,000 of them. Wonderful 

 as these statements are, Professor Cohn has been led by his inves- 

 tigations to say " that it is by no means certain that there are not 

 organized forms even beyond these, and that when the mathe- 

 matician declares that matter is capable of infinite division, he is 

 laying down an actual as well as a theoretical truth." 



Fig. 7. Bacteria Teemo with Flagella. 



In figure 7, a 1 represents the Bacterium iernio magnified with 

 1,300 diameters, diminished one-half, while h 1 represents the 

 Spirillum voluians, the largest of the bacteria, and one usually 

 found in vegetable infusions and ia all fresh and salt water, 

 magnified with the same power as a. No. 2 is B. iermo, seen with 

 a power of six hundred diameters. No. 3, with one of 3,700 diam- 

 eters. No. 4 represents the B. tenno, with a cilia at one end, the 



