. Bacteriology and mycology of foods. Food. 4l^% a Fig 1 —Types of Fermentation Tubes. Af Brown's, J5, Smith's C, Smith's, without foot, D, Graves' Modification of the Durham Fermentation Tube. D Petri Dishes. These should be about 10 cm. in diameter, thus having an area of about 65 sq. cm. Either glass or porous tops may be used. The porous tops devised by Hill prevent the spreading colonies which appear so often on Petri dishes in humid weather. Very often it is difficult to secure Petri dishes with flat bottoms. This is essential to an even distribution of bacteria over the plate and a unif
. Bacteriology and mycology of foods. Food. 4l^% a Fig 1 —Types of Fermentation Tubes. Af Brown's, J5, Smith's C, Smith's, without foot, D, Graves' Modification of the Durham Fermentation Tube. D Petri Dishes. These should be about 10 cm. in diameter, thus having an area of about 65 sq. cm. Either glass or porous tops may be used. The porous tops devised by Hill prevent the spreading colonies which appear so often on Petri dishes in humid weather. Very often it is difficult to secure Petri dishes with flat bottoms. This is essential to an even distribution of bacteria over the plate and a uniform thick- ness of medium. Dilution Bottles. These may be of various types and shapes but should contain the amount of dilution water when about half full This ^,llows ample room for thorough shaking of the diluted sample. Bottles. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tanner, Fred Wilbur, 1888-1957. New York, John Wiley & Sons, Inc. ; [etc. ,etc. ]
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectfood, bookyear1919
