402 HOW TO SEE WITH THE MICROSCOPE. 



tals of nitrate of soda and cholesterine (?) were to be seen in 

 every slide prepared from the samples named. 



Besides the crystals named, samples Nos. 1 and 2 gave " sus- 

 picious cells " in large numbers, accompanied by shreds and 

 tissue fibres, many in a broken down condition, while others 

 seemed to be in a tolerably normal stdte, sufficient almost to 

 establish the presence of voluntary muscle. Bundles of these 

 fibres were closely examined with the duplex l-4th, under powres 

 as high as 1,600 diameters, with the endeavor to bring out 

 the transverse markings ; this was not accomplished owing, 

 doubtless, to the nature of the vehicle (my observations in this 

 direction will be continued). Many of the bundles seen were 

 completely broken down, and the elementary fibres detached. 



Sample No. 3, when examined under the microscope, displayed 

 fewei f the "feathery crystals;" nevertheless, this was the 

 most u buspicious " specimen of the three ; there were multi- 

 tudes of " suspicious cells," shreds and patches of tissue, in a 

 more or less broken down state. In one field I felt tolerably 

 sure of finding encysted hydatids. This slide unfortunately, 

 was accidentally destroyed by the water getting under the 

 cover. 



To give an intelligent description of this material (No. 3) 

 would require far more time to its study than I have at my com- 

 mand at present ; but I hope to attack it again, and at an earlr 

 day. Suffice it now to say that this specimen contains verymani 

 " suspicious " elements, and that its behavior under the objec- 

 tive (here I also include Nos. 1 and 2), is with the exception of 

 the crystals of chloride of sodium, and the presence of a few 

 fatty globules totally different from that of pure dairy butter. 



The sample of pure dairy butter gave fields just as represented 

 by Prof. Michels, with the exception that crystals of the chlor- 

 ide were almost constantly present. 



Having established, to my own satisfaction, at least, the in- 

 tegrity ot the observations of Prof. Michels, I therefore hold 

 that the gentleman should be regarded in the light of a public 

 benefactor ; the matter he has presented will be found worth 

 serious and careful investigation. 



In one of my recent lectures before the medical class of this 



