[3] Tomatoes are sometimes found with rotten centers of which there is little or no external evidence. This is unusual, however, and the influence of this form of rot under manufacturing conditions is negligible.
[4] Apochromatic objectives may now be obtained but are more expensive than the achromatic.
[5] We are informed that the Bausch and Lomb Optical Co. also furnishes suitable apochromatic objectives and compensating oculars for use in counting molds, yeast and bacteria by the Howard method.
[6a]
[6b]Comment by authors: In using these cells the plane parallel cover glasses furnished with them by maker should be used instead of the ordinary microscope cover-glasses, since the latter are subject to curvatures that introduce errors in the thickness of the mounts.
[7] Comment by authors: Obviously after the proper draw-tube length has been secured that adjustment should be noted and always used in making mold counts.
[8] This number refers to the section as given in the Methods of Analysis of the Association of Agricultural Chemists.
[9] Comment by authors: The organisms counted as “yeasts and spores” are the yeast cell and yeast and mold spores, not bacteria spores.
[10] This number refers to the section as given in the Methods of Analysis of the Association of Official Agricultural Chemists.
[11] The 4 mm. achromatic objective and the 10X ocular as given in the list of apparatus may also be used to secure this magnification.
[12] “Ueber quantitative Bestimmungen wässeriger Lösungen mit dem Zeiss-schen Eintauch-refraktometer,” Table XVII.