The Geologist in performing this part of the excursion will have much to observe. About one hundred yards west of Mousehole, the clay-slate ceases, and the granite commences. At this junction numerous granite veins, varying in width from about a foot to less than an inch, pass through the slate.[47] A little farther west, a cavern may be observed in the cliff, which has evidently been produced by the decomposition of the walls of an old _Adit_. In this cavern the Mineralogist has found good specimens of _Eisenkeisel_, or Iron flint:--but we will conclude, for our tourist must be wearied by the length of the excursion; tomorrow we shall be again prepared to accompany him in a different direction, and to point out a succession of fresh objects, when antiquities, minerals, and picturesque views will, in their turn, again present themselves for his examination. [Illustration: _Between Penzance, and Buryan._] FOOTNOTES: [35] This product is carefully collected, and preserved in stacks by the inhabitants, for the purpose of fuel. It is worthy of remark that the nature of the fuel employed in a country always imparts a character to its cookery, hence the striking difference between that of Paris and London; so in Cornwall, the convenience afforded by the furze in the process of Baking, has given origin to the general use of pies. Every article of food is dressed in a pie, whence it has become a proverb, that "_the Devil will not come into Cornwall, for fear of being put into a pie_." In a season of scarcity the Attorneys of the county having at the Quarter Sessions very properly resolved to abstain from every kind of pastry, an allusion to the above proverb was very happily introduced into an Epigram, extemporaneously delivered on the occasion, and which, from its point and humour, deserves to be recorded-- "If the proverb be true, that the fame of our pies Prevents us from falling to Satan a prey, It is clear that _his friends_--the Attorneys,--are wise In moving such obstacles out of the way."