On a low hedge under the light-houses is to be found _Herniaria Glabra_. It was here in the pursuit of this very plant that a well known Botanist, during the late war, was seized as a spy by the suspicious natives, and carried to Helston for examination. The increased intercourse, however, with scientific travellers, will render the recurrence of such an event impossible. The name of the promontory was most probably derived from the striking _contour_ which it exhibits when viewed from sea, resembling the elongated and compressed form of the Lizard; at the same time it must be observed, that the colour of its rocks resemble also that of the animal to which we allude, while the British words _Lis-ard_ signify a lofty projection; these are extraordinary coincidences, and are well calculated to fan the flame of etymological controversy. If after visiting this promontory, the traveller feels inclined to trace the different rock formations, and to complete his geological survey of the Lizard _Chersonesus_, we recommend him to return by a circuitous route along its eastern coast. _Greenstone_ reappears about half a mile east of the Lizard Point, and continues for some distance, with the occasional interruption of Serpentine, which dips towards the sea. This latter rock will be found best adapted for oeconomical purposes at the _Balk Hill_, _Landewednock_, but it is certainly far inferior to that worked for chimney pieces, columns, &c. from the quarries in the Isle of Anglesea. Near _Cadgwith_ the rocks on the coast form a very interesting and extraordinary amphitheatre, which is termed by the inhabitants the FRYING PAN, although the appellation of CAULDRON, which it strongly resembles, would be much more appropriate. Its sides are nearly two hundred feet in height, and, at high water, the sea enters it and boils up through an arch near its bottom. In this spot the position of the _Serpentine_ upon _Greenstone_ is very apparent. Beyond _Cadgwith_ the _Serpentine_ assumes a dark green colour, and contains small masses of the emerald green _Diallage_, or _Schiller-spar_; whence it continues to constitute the coast round the _Black Head_ to _Coverack Cove_. About a mile from the coast at _Gwenter_, the rock denominated by Abbe Haüy "_Diallage Rock_" (_Gabbro_) presents itself to our notice; it is composed of _Saussurite_, or _Compact Felspar_, and _Diallage Metalloïde_. In a quarry near this spot it may be seen to join _Serpentine_. In the _Diallage Rock_, at a small village near the coast called _Gwendra_, as well as in the rock of _Saint Keverne_, Mr. Majendie discovered some small metallic specks, which he found on chemical examination to consist of Iron, with a portion of _Titanium_. Some of the same substance was immediately transmitted to Mr. William Gregor, who stated that the results of his experiments proved it to be an assemblage of several ingredients, _viz_. _Silica_, _Alumina_, and the _Oxides of