. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 620 LABORATORY EXERCISES When it is intended to sow a definite number of cells,' water b usuaUy added to the yeast to be used as sowing material, the cells being thus more easily separated from one another on shaking; also, no appreciable increase of the cells takes place, especially if the flask is subjected to a low temperature after the sample has been Fig. 2i8A.—Blood counter case, u, Slide with counting chamber; ft, rubber cork covering tip of white pipette; c, soft rub
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 620 LABORATORY EXERCISES When it is intended to sow a definite number of cells,' water b usuaUy added to the yeast to be used as sowing material, the cells being thus more easily separated from one another on shaking; also, no appreciable increase of the cells takes place, especially if the flask is subjected to a low temperature after the sample has been Fig. 2i8A.—Blood counter case, u, Slide with counting chamber; ft, rubber cork covering tip of white pipette; c, soft rubber tubing; d, red pipette provided with rubber cork; e, cutting needle in 95 percent, alcohol; g, Hayem'ssolution; h, .5 per cent, acetic acid. {After Mcjunkin.) The yeast is, therefore, shaken up vigorously and continuously with sterile water, and an average sample removed. There are three different cases to be considered now, viz.: (i) When we wish to know only how many cells are present in a certain portion of the water-yeast mixture; (2) when it is intended to inoculate a previously determined number of cells into the liquid to be dealt with; and (3) when it is desired to sow so many cells, that after the seeding the definite number of cells desired may be present in an arbitrary space unit, , when making comparisons of the multiply- ' Klocker, Alb.: Fermentation Organisms, 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 Harshberger, John W. (John William), 1869-1929. Philadelphia : P. Blakiston's Son & Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
