340 LECTURE XIV. 



but cells ; in tissues composed of cells and intercellular 

 substance, nothing but cells and intercellular substance ; 

 the individual elements indeed were larger, fuller and 

 filled with a quantity of matter with which they ought 

 not to have been filled, but there was no exudation in 

 the manner in which it had been imagined to exist, 

 namely free, or in the interstices of the tissue. All the 

 matter was contained in the elements of the tissues 

 themselves. This was what I intended to express by 

 the term, parenchymatous exudation, and hence the 

 name, parenchymatous inflammation, is derived a name 

 which was, indeed, used in former times, but in quite 

 another sense from that I meant and which is now 

 more generally employed than is perhaps desirable. It 

 is, however, at all events important that you should 

 draw a distinct line of demarcation between this form 

 of irritation as a general standard and the other forms 

 (especially the formative one), inasmuch as in it only 

 the constituent elements of a tissue already existing 

 in the body take up a larger quantity of material, and 

 besides these enlarged elements nothing else is present. 

 I will immediately send round a preparation to you, 

 in which you will see a very characteristic example of 

 such an inflammation. It is almost the most striking 

 example which for a long time has come before me. It 

 is a specimen from a case of so-called Keratitis, from 

 one of Herr von Graefe's patients, in whom, after vio- 

 lent, diffuse phlegmonous inflammation of the extremi- 

 ties, an extremely rapid inflammatory opacity of the 

 cornea took place. When the cornea was put into my 

 hands, it seemed to me as if it were opaque and swollen 

 in its whole thickness. The vessels of the borders were 

 very full of blood. But when I made a section through 

 the part, it at once became evident, even with a low 

 power, that the opacity extended by no means uni- 



