An Atlas of the Bacteria Pathogenic in 

 the Hitman Subject. 



PART I. 



BY SAMUEL G. SHATTOCK, F.R.C.S. 



THE object of the accompanying plates is to present graph- 

 ically from original preparations all the chief bacteria which are 

 pathogenic in the human subject. 



The originals of the drawings (in the Museum of the Royal 

 College of Surgeons, London) have been made under the au- 

 thor's supervision by Mr. G, T. Gwilliam, F.R.A.S., who, from 

 an astronomical experience, is a draughtsman of extreme accur- 

 acy, and they may be relied upon as absolutely faithful repre- 

 sentations of the objects themselves. 



All the preparations have been drawn as viewed under a ~ 

 homogeneous immersion, Leitz, ocular No. 2, tube length 170 

 millimeters, giving a magnification of 680. It is to be noted, 

 however, that in order not to tax the eye, they have in all cases 

 been slightly enlarged in the drawing. The actual magnifica- 

 tion amounts to about 1,000. 



Each illustration gives the chief forms selected from several 

 fields in order to bring out their variations, their differences in 

 size, or their grouping, etc., a result which will dispel the idea 

 of uniformity in these respects that is sometimes gained from 

 representations where such differences are studiously excluded. 



All the drawings have been made from cultures in an active 



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