6 PLUTONIC ROCKS.—CASE I. 
Note.—It will be seen, from an examination of these specimens 
(Nos. 26 and 27, and No. 11), how widely individual specimens from 
granitic dykes occurring in other rocks differ amongst themselves. All 
these specimens were taken from within a yard of one another: No. 11 
presenting a fine-grained appearance, with a vein of felspar ; No. 26 
very much coarser ; and No. 27 showing an extremely coarse texture, 
with the plates of mica often forming small nests. 
28, GRANITE. Map No. Ra 12. | *34. Vern or EURITE, with 
Lot 1, section 1A, Maldon. }sheet GRANITE. List No, Re 10. 
14 S.W Dargan’s Swamp. 
This specimen shows the junction of 
the granite and highly metamorphosed 
Lower Silurian rocks (hornfels), 35. Granite PorPHYRY. 
Map No. Rb 45. 
29, TERNARY GRANITE. West side of Mount Alexander, 
i Map No. Rb 21. parish of Harcourt. % sheet 
O’Keefe’s Contract for Coliban 13 N.W. 
Watr Sup i, Preston Vale. Portion of a fine-grained granitic 
ł sheet AA boss enclosed in granite. The base is 
The black portion consists of nume- | com A fi 
7 ia posed of quartz and mica, with 
rous fine plates of black mica, and con- larger plates of black mica sal white 
tains small green patches, probably chlo- . > 
rite; also white crystals of orthoclase. Opadielcryatals of oreociasa: 
These patches or bosses of mica are of | 35A, TERNARY GRANITE. 
frequent occurrence in granite. List No. Rd 22 
30. TERNARY GRANITE. About 1 mile N.E. of Station 
i List No. Re 10. Peak, } sheet 20 S.W. 
Near Dandenong. The felspar is in large pieces, of a 
The felspar has a slightly red color. | brownish-yellow color. 
Attached is a piece of felspar porphyry. , : 
35B. TERNARY GRANITE. 
31. TERNARY GRANITE. List No. Rd 21 
Map No. Rb 38. ; ; j 
Hughes's Tunnel (No. 3), Coliban pa ee ga Gaoi 
Water Supply Contract, Mount aines mh 
Alexander, 4 sheet 13 N.W. The felspar is of a red color. 
With red felspar, 300 feet from north 
end of tunnel. The sides of this speci- 36. TERNARY GRANITE. 

men are covered with a yellowish-green j List No. Re 6, 
mineral, colored by protoxide of iron. Range west of Mount Martha, 
32, Sanoa eee Sonn 87. TERNARY GRANITE, 
. Gellibrand’s Hill, section 8, parish Mount Alexander. $ sheet 13 
of Will-Will-Rook. 4 sheet 2 ' 
_ 8.W. 
With ue of rafal fine-grained | 38. TERNARY GRANITE, 
micaceous boss. The granite of Gelli- Map No. Rb (24 
brand’s Hill makes a good building | Section 6, Si a eh 
stone, and was used for Prince’s Bridge, 13 N.W i RE E: 
the old Town Hall and the present . ite, 
Commissioner of Titles Office. See This does not form a good building 
“ Building Stones,” No. 3. stone, as it decomposes in red spots. 
83, Euniric Veryin Granirz, | 89. Ternary GRANITE. ; 
` Map No. Ra 57. | Map No. Ra 93 
Spring Hut. 4 sheet 14 N.W. ` Pigeon Hill. 4 TE 14 N.W i 
Those markel with an * occur as dykes (Elvans), 
` 
