Hlarker: Chemical Notes on Lake District Rocks. 55 
‘The following five silica-percentages were published in two 
apers on the Shap granite by Mr. Marr and the present 
writer.* Of (14) and (15) partial analyses were given; of (13), 
oo and (17) only the silica and lime. The work is Mr. 
E. J. Garwood’s. 
(13). 59°95. Between Wasdale Pike ied Great Yarlside : amyg- 
daloidal andesite ; sp.gr. 2°736. 
(14). 75°95. Stockdale: spherulitic rhyolite; sp.gr. 2-608. 
(15). 76°95. Wasdale Head Farm, close to Shap granite: 
nodular rhyolite, metamorphosed ; sp.gr. 2°623. 
(16). 50°75. Low Fell, Shap: basalt, partly metamorphosed ; 
sp.gr. 2°800 
(17). 50°90. Low Fell, Shien: basic tuff. 
The next six silica-percentages are given by Mr. W. M. 
Hutchings in his Petrological Notes on some Lake District 
Rocks,t and No. (24) is from a complete analysis by Dr. Cohen, 
quoted in the same paper. Three other rocks examined by 
Mr. Hutchings are excluded, since it appears from his descrip- 
tions that they belong to intrusions, not to the volcanic series. 
(18). 51°35.) Scarf Gap, near summit of pass: vesicular basalt 
with porphyritic augite.; sp.gr. 2°82. 
(19). 57°55. Above Nan Bield: augite-andesite ; sp.gr. 2°65. 
(20). 52°45. Easedale Tarn, right side: much altered andesite. 
(21). 60°75. Easedale Tarn, left side: andesite. 
(22). 51°6. Between Seatoller and Seathwaite, roadside quarry: 
much altered andesite. 
(23). 53°55. Seatoller Fell: ‘andesitic basalt’; sp.gr. 2°88. 
(24). 58°69. Thornthwaite Crag, below cairn: andesite (analysis 
made on material picked free from amygdules). 
The five following are from the samé author’s Notes on the 
Ash-Slates of the Lake District, four being by Mr. G. Patterson 
and the last by Dr. Cohen. Of the first two rocks complete 
analyses were made; of the remaining three only the silica and 
alkalies were estimated. For Nos. (25), (26), and (28) the 
material before analysis was treated with hydrochloric acid and 
potash to extract the chloritic matter. No. 30is froma complete 
analysis by Mr. Hutchings published in another paper. § 
(25). 69°22, Mosedale, near Shap: ash-slate (extracted). 
* Quart. Journ. Geol. Soc., vol. xlvii., pp- 293,302, 1891; vol. xlix., 
P- 361, 1893. 
+ Geol. Mag. for 1891, pp. 536-544 
+ Geol. Mag. for 1892, pp. 154-161, 218-228. 
§ pine Mag. for 1895, p. 316. 
