Additional Observations on the Geology of the Lake-country

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Abstract
Recent investigations among the Skiddaw slates have made important additions to the fauna of this portion of the Lower Silurian series: the fossils which have been obtained have, for the most part, come from the Coldale valley, from strata which form the lowest rocks of the Lake-country. There have now to be added to the fossils of this portion of the Skiddaw slates two Trilobites, namely a new form of Phacops , found at Whiteside, near Coldale, and Æglina binodosa . To these have to be added perfect tails of Caryocaris Wrightii , the portion which had not been discovered when Mr. Salter's figure was published; and these bear out in every respect the restoration of this Crustacean by that palæontologist. The lower beds of the Skiddaw slates have recently furnished other fossils, among which is a small Lingula nearly allied to L. brevis , Port., according to Mr. Davidson, and some small oval bodies arranged in a ribbon-shaped form. These latter appear to be ova, and they occur in the greatest quantities where Caryocaris Wrightii abounds. The branching Bryozoon figured in the Memoir referred to in the note has also recently been met with in greater perfection among the “Screes” on the sides of Frozzengill. As figured in Mr. Salter's note, it is represented as small dichotomously branching stems. The portions which have recently been obtained show stronger stems than the original fossils, and these stronger stems have anastomosing thinner portions, giving the fossil an aspect very like the corneous axis of a

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