CHAPTER II. 

 LABORATORY EQUIPMENT. GENERAL TECHNIQUE. 



Although some of the tests of serum diagnosis are comparatively simple 

 and can be performed in one's office or even at the bedside, in most instances 

 a laboratory equipment is essential. This of course does not at all imply 

 the necessity of such elaborate apparatus as one is accustomed to find in our 

 present up-to-date bacteriological or serological laboratories where a great 

 deal of complicated research work is done. For the practical application of 



FIG. i. A room in the laboratory of the Royal Institute of Berlin for the study of 



infectious diseases. 



serum diagnosis, as employed at the hospital or in private practice, an outfit 

 much less costly is perfectly sufficient. As regards the question of a room, 

 the selection of one with two windows, allowing the entrance of sufficient 

 light, is indispensable. At the same time, however, some arrangement 

 should be made in connection with the windows in order that the direct rays 



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