. Bacteriology and mycology of foods. Food. THE MICROSCOPE 23 may be combined with alkalin pyrogallol and give an atmosphere which is entirely free from oxygen. Petri Dish 10 cm diatn. â Rubber Stopper^ liU Tl^ ') j:;^ t Air Outlet Annular flroove 3ram. Deep s 4 mm Wide. n 3n "un Fig. 23.âJones Anaerobic Culture Apparatus. Cross-section of the Stone Base with Petri Dish in Position. âEye Lens' The Microscope A compound microscope is necessary for a study of bacteria. The success which a student has in the pursuit of microbiology is often dependent upon thorough knowledge of the microscope
. Bacteriology and mycology of foods. Food. THE MICROSCOPE 23 may be combined with alkalin pyrogallol and give an atmosphere which is entirely free from oxygen. Petri Dish 10 cm diatn. â Rubber Stopper^ liU Tl^ ') j:;^ t Air Outlet Annular flroove 3ram. Deep s 4 mm Wide. n 3n "un Fig. 23.âJones Anaerobic Culture Apparatus. Cross-section of the Stone Base with Petri Dish in Position. âEye Lens' The Microscope A compound microscope is necessary for a study of bacteria. The success which a student has in the pursuit of microbiology is often dependent upon thorough knowledge of the microscope. It is desirable to study the microscope with much care in order to under- stand its limitations and the sig- nificance of each part. It is much better to regard it as a delicate piece of mechanism through whose intelligent use an entire world of living organisms will be made visi- (E Diaphragm â Field Lens â DiawTuhe of the ^ Ocular Bulloch's Method. This is very similar to Novy's and needs no special attention here. The air in the jar should be replaced by an inert gas. Jones' Method. This method allows the observation of growth and requires very little gas. It is described by the author as follows: ^' The apparatus consists of one-half of a Petri dish sealed with paraffin on a square stone or metal base provided for an inlet of the inert gas and outlet of air. The figure gives the general construction of the apparatus. !1â â Body Tube -Draw Tube Diaphgram with Society Screw. Cover Glass. Society Screw ⢠Mount â Back Lens 'Middle Lens -Front Lens -Working- Distance . of the Objeetive Slide Object Fig. 24.âShowing Cross-section of a Microscope. (Courtesy of the Spencer Lens Company). 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,
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectfood, bookyear1919
