70 BACTERIOLOGY OF THE EYE 



peripheral epithelial cells of the molluscum. They increase in size 

 towards the centre at the expense of the cells, and finally leave the 

 flattened squamous epithelial cells and lie free. 



Cultures have not succeeded. 1 The generally accepted view that 

 the bodies themselves are the parasites is still disputed by many, who 

 consider the molluscum bodies only as cell degenerations and the 

 results of an infective process. It is universally agreed that infection 

 can be carried by the contents of the cysts when expressed ; this is 

 confirmed by numerous trials and the clinical records of infections, 

 among which we have the positive inoculation which Paultry 2 made 

 on himself with a molluscum of the lid margin. 



Fuller details of this subject can be found in the article by Miitze 

 (Arch. f. Aug., 1896, xxxiii., S. 302). For the literature, see 

 Falkenburg (Inaug. Dissert., 1898, Munich) ; Elschnig (Wien. Klin. 

 Wocliens., 1897, No. 43) ; Fischer (Inaug. Dissert., Rostock, 1903) ; 

 Herzog (Arch.f. Anat. u. Mikros., 1904) ; Oppenheimer (Oph. Record, 

 April, 1905). 



Rarer Lid Infections. 



When the clinical appearances have fully developed, favus of 

 the lid resembles the same disease in other regions. An early case, 

 however, requires careful examination, and will be first recognized by 

 the microscope. 



Cases of favus exclusively affecting the lids are recorded by Narkie- 

 wicz, 3 Schiess and Gemuseus, 4 McHardy, 5 Cuenod, 6 Gloor, 7 Schmidt- 

 Rimpler, 8 Libman, 9 Derby, 10 Pecoraro, 11 Pergens, 12 Treacher Collins. 13 



Ovoid spores 3 to 4 p- broad are found in the fine scales, either 

 singly or in chains, and along with them the mycelium of the 

 Achorion Sclwnleinii. This forms a network of granular hyphse, 

 varying in thickness, easily recognized in an unstained preparation 

 (water and glycerine) after the addition of a little acetic acid or 

 clearing with caustic soda. The organism grows readily on agar. In 

 a few days it forms a yellowish-white surface crust, which is often 

 covered with a white down. Schmidt-Rimpler obtained cultures 

 on panada. 



The varieties (a, @, 7) described by Quincke, and the many modifica- 



1 We generally obtain the common cocci (Herzog). 



2 Quoted by Cuenod, p. 115. 3 K. M.f. //., 1870, viii., S. 78. 

 4 Ibid., 1873, xi., S. 238. 5 Lancet, March, 1885. 



6 ' Bakt. des Paupieres,' Tlitse de Paris, 1894, p. 101. 



7 A. f. A., 1898, Bd. xxxvii., S. 358. 8 Deutsche Med. Woch., 1902, No. 2. 

 9 Arch, of Ophth., 1887, Vol. v., p. 199, quoted by Derby. 



10 T. Amer. 0. S., 1906. n Arch, di OttaL, 1904, xi., p. 311. 



12 K. M.f. A., 1897, xxxv., S. 241. 1S T. 0. S., 1903, p. 1. 



