Plate XXVI. 



In this Collotype Plate, an attempt is made to represent the general features of 



the most characteristic rock-sections, as they appear under the microscope. All give 



the magnification of 140 diameters. 



Fig. 1, — represents the rock-section of garnet-chloritoid-quarz-schist, one of the 

 members of the Gozaisho series. Colourless granules in the photograph is 

 the aggregate of garnet, while the irregularly outlined, black patches are 

 the plum-green lamellae of chloritoid. The white ground consists of 

 quartz. (See p. 270.) 



Fig. 2, — -shows a portion of the light-green band in titanite-salite-amphibolite. 

 The crystalloids with a few cleavage-lines are the crystal-grains of salite, 

 while at the lower margin of the figure we find a basal section of the same 

 Avith its characteristic augite-cleavage. The white ground in the figure 

 represents the aggregates of feldspar which is changed into a colourless, 

 fine fibrous, confused mass, displaying highly chromatic, aggregate polari- 

 zation-colours. The intact part of the feldspar appears in a sporadic 

 manner within the micaceous mass which seems to be identical with 

 pseudophite or saussurite. (See p. 253.) 



Fig. 3, — shows sillimanite in confused aggregate, occurring in garnet-biotite-schist 

 of the Takanuki series. (See p. 251.) 



Fig. 4, — is the section of a typical titanite-biotite-amphibolite, in which are seen the 

 bacillar amphibole, and round titanite, resembling rolls of butter, some- 

 times with clumps of titaniferous iron in the centre. Locality : Karaada 

 near Takanuki. (See p. 252.) 



