UIHistories Project: A History of the University of Illinois by Kalev Leetaru
N A V I G A T I O N D I G I T A L L I B R A R Y
Bookmark and Share



Repository: UIHistories Project: Board of Trustees Minutes - 1882 [PAGE 147]

Caption: Board of Trustees Minutes - 1882
This is a reduced-resolution page image for fast online browsing.


Jump to Page:
< Previous Page [Displaying Page 147 of 266] Next Page >
[VIEW ALL PAGE THUMBNAILS]




EXTRACTED TEXT FROM PAGE:



141

B . catenula, Duj.

Cells cylindrical filiform, often three, four or five united; length .00012, to .00016 in., thickness .00002 in. In fetid infusions and in typhoid fever (Coze and Feltz.)

This and the preceding are taken (translated from the French) from Magnin's work on Bacteria, but they are put down as doubtful speeies. They seem from the shape of the cells to belong rather to Bacillus.

The four following, also copied from Magnin, are said by him to require further study, though apparently species of Bacterium:

Vibrio lactic, Pasteur.

Cells almost globular, very short, a little swollen at the extremities; length, .000064 in. in a series; .00200 in. long. Develops, according to Pasteur, in sweet liquids, in which it causes the formation of acetic acid and in milk the coagulation of the casein. According to other researches the coagulation of the casein is influenced by a soluble (zymase), and not an organized, ferment.

Mycoderma aceti, Pasteur.

Synonym: TJlvina aceti, Ktg. Exsiccata: Thumen Mycotheca Universalis 1599. Cells short, narrowed in the middle, often united in long chains, forming a pellicle on the surface of liquids; length of a cell .00006 in., which is two or three times the width. This species is thus very near the preceding; it should not be confounded with Mycoderma vini, which may develop in the same liquids, but which belongs to the Saccharorn,ycetes.

Vibrio tartaric right, Pasteur.

Cells globular, short, .00004 in., united in chains about .00200 in. long; similar to the preceding. Decomposes racemic acid, causing right tartaric acid to disappear, and liberating left tartaric acid.

The acid fermentation of beer.

Cohn thinks this is due to a Bacterium similar to B. termo, but a little larger. He has found it with oval Saccharomycetes in acid beer—elliptical Bacteria endowed with motion, often united in pairs, rarely in fours].

BACILLUS, COHN.

(Beitr. z. Biol. I, Bd. 2, Hen. p. 173).

Cells elongated cylindrical, almost always attached together in straight rod-like (stielrunden) rows or threads (not or little interlaced) ; multiplying by transverse division. They form zoogloea, but often also occur united in thick swarms without gelatinous secretion. Propagation by spores.

The genus Bacillus is closely related to Bacterium; especially is Bacterium lineola with united cells very similar to Bacillus rods. Yet there is this difference, that in the longer Bacterium cells the appearance of dividing is perceptible, while in the Bacillus cells of equal length it is not. Some of the species are always motionless, some are spontaneously motile, but go into a resting condition. The rod-like cells elongate by intercalary growth to about double the typical length, and then divide by a transverse partition into two daughter cells, which often separate from each other, but often also remain attached. When the products of repeated division continue joined together filaments are produced, which are zigzag or