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EXPLANATION OF THE PLATES. 



PLATE VI. 





This Plate illustrates the mode of development of the mycodermatous vegetations growing in the cap- 

 sules of the Tinea favosa or Porrigo lupinosa of Bateman. 



Fig. 1. Appearance of the mycodermata in the Porrigo lupinosa, on making a thin section perpendicu- 

 larly through the capsule, a Epidermic scales at the periphery of the capsule ; 6 amorphous gra- 

 nular matter, rendered apparently of considerable width from being pressed between glasses ; c the 

 cylindrical jointed tubes matted together by the amorphous mass ; d the cylindrical tubes and spor- 

 ules separated by means of pressure. The former are seen branching and giving off sporules at 

 their extremities. There are also seen numerous loose branches and sporules, isolated or grouped 

 together, e Sporules en masse towards the centre of the capsule. 



Fig. 2. Cylindrical tubes coming from the granular mass, found near the edge of the capsule. 



Fig. 3. Similar tubes found at an early period of the development of the capsule. They are seen spring- 

 ing from the edge to which epidermic scales are attached. 



Fig. 4. Mass of epidermic scales from the inferior surface of the capsule. 



Figs. 5. and 6. A small portion of the whitish friable matter, consisting almost wholly of sporules, found 

 in the centre of the capsule, a Larger, round, and oval sporules, having a distinct nucleus. 



Fig. 7. Isolated branches, occasionally found floating loose in the field of the microscope, shewing the 

 mode in which sporules and branches are given off from the cylindrical tubes. 



Fig. 8. Similar branches, magnified 800 diameters, shewing the molecules occasionally found within the 

 cells. 



All the above figures, with the exception of fig- 8., exhibit the structures as (hey appear when magnified 



300 diameters. 



PLATE VII. 



This plate gives the appearance of the vegetable structures found growing in the human lung, and on 

 the skin of the gold-fish. 



Fig. 1. A beautiful specimen of the plant found in the sputa before death, springing from the amorphous 

 albuminous mass. 



Fig. 2. Jointed tubes matted together, mixed with sporules, found in the soft cheesy matter in a tuber- 

 cular cavity. 



Figs. 3. and 4. Other specimens of the plant taken from the lung. In fig. 4. some sporules are seen 

 accidentally attached. 

 VOL. XV. PART. II. 4 K 



