"When Christianity was first introduced into England, it was customary for the missionaries to select some one known gigantic tree as their place of assemblage. These leafy tabernacles were generally oaks of vast size and stature. Nor is it at all unlikely that some of them were thus chosen because from their gigantic bosoms the sacred mistletoe of the Druids had been cut, and they were consecrated by superstitious veneration in the minds of the people as sacred places. Nor were they inappropriate pulpits for the apostolic bishops and priests, who thus, in making their shades vocal with the gospel words, proclaimed by their voice and presence the victory of Christ over darkness and idolatry." P. 18. Can the following item in the will of John Cole, of Thelnetham, dated May 8, 1527, be considered as throwing any light upon their origin and use? "Item, I will have a newe crosse made according to Trappett's crosse at the Hawelanesende, and sett vp at _Short Groves end, where the gospell is sayd vpon Ascension Even_, for y'e w'ch I assigne X_s._" _Bury Wills_, p. 118. BURIENSIS. THE PENDULUM DEMONSTRATION. (Vol. v., p. 84.) A few lines will suffice for my rejoinder to H. C. K.'s further observations on this subject. Since he and I are substantially of the same opinion as to the reality of the phenomenon, it would be bootless to discuss the comparative merits of the considerations that have led us to it. But inasmuch as I am very careful in making assertions, so am I proportionately impatient when their correctness is wrongfully impugned. H. C. K., in remarking upon a statement of mine, enters into a calculation to show that it is absurd. At least such I suppose to be the meaning of the paragraph concluding with the words "which is absurd." My assertion was, that the difference alluded to was "greatly in excess of the alleged apparent motion." Now "_the difference_" was fifty feet in twenty-four hours, or upwards of two feet in the hour; and "_the alleged apparent motion_" had been stated over and over again to be a complete revolution in about thirty hours (for the latitude of London). Hence, the circumference of a ten-feet circle being about thirty feet, it requires no great profundity to discover that "the alleged apparent motion" is one foot in the hour; but the "difference" in velocity is two feet in the hour, which surely justifies the assertion that the latter is "greatly in excess" of the former. It would occupy too much space to show H. C. K. where it is that his calculation has gone astray; but if he will reconsider it, he will perceive, firstly, that he has no authority, except his own, for assuming a revolution (of the line of oscillation) in _twenty-four_ hours; and secondly, that five feet _on either side_ of the centre is equal to ten feet altogether.