HAKKKH : CIIKMICAL DATA FOR LAKE DISTRICT HOCKS. 
65 
(61) . 50.88 (anal.). Cleaved tuff, "green Westmoreland slate,"' 
probably from Tilberthwaite : Vogt (XXII.). 
(62) . 61.25 (silica). Cleaved tuff, slate, Tilberthwaite quarries : 
Garwood (XXIII.). 
(63) . 50.16 (anal.). Cleaved tuff, dark green slate, Tilber- 
thwaite : Holland (XXV.). 
(64) . 52.67 (anal.). Cleaved tuff, green slate, Elterwater : 
Holland (XXV.). 
(65) . 80.52 (anal.). Insoluble ]) )rtion of the same rock : 
Holland (XXV.). 
Shap Andesite Group. 
{66). 59.95 (silica and lime). Amygdaloidal augite-andesite, 
between VVasdale Pike and (rreat Varlside : Garwood 
(XIII., XVI.). 
-(67). 65.80 (anal.). Andesite, " near Coniston '* : Cohen (X.). 
Also two rocks doubtfully referred to this group : — 
(68) . 63.60 (anal.). Andesite, boulder, Oxford Street, Man- 
chester : Cohen (X.). 
(69) . 61.95 (silica). Crushed and cleaved ))orphyritic lava, 
Crags Mill. Shap : (Garwood (XXIII.). 
Shap Rhvolite Group. 
(70) . 53.10 (anal.). Basic tuff, highl}* metamorphosed, close to 
Shap granite. Wasdale Pike : Hutchings (XXI.). 
(71) . 75.95 (partial anal.). Spherulitic rhyolite, Stockdale : 
Garwood (XIII.). 
(72) . 76.95 (partial anal.). X^odular rhyolite, metamorphosed, 
close to Shap granite, Wasdale Head Farm : Garwood 
(XIII.). 
(73) . 83.8 (silica). Rhyolite, probably with secondary quartz, 
locality not specified : Tate (XXIII.). 
(74) . 69.00 (anal.). Soda-rhyolite, north- end of Dufton Pike, 
Eden Valley : Holland (XXVI.). 
(75) . 71.05 (anal.). Rhyolite, Dufton Pike : Holland (XXVI.). 
