Mr Petrie’s recently published book upon the Pyramids of Gezeh, while it makes short work of many previously accepted theories as to the intention and uses of those gigantic structures, gives much information of a most interesting kind, and throws a new light upon many previously obscure portions of the subject. Most interesting is that part of the work devoted to the mechanical means employed by the builders of the Pyramids. Mr Petrie traces in the huge stones of which the Pyramids are built, the undoubted marks of saw-cutting and tubular drilling. He believes that the tools employed were of bronze, and asserts that this metal has left a green stain on the sides of the saw-cuts. Jewels, to form cutting-points, he believes to have been set both in the teeth of the saws and also on the circumference of the drills. (If this be true, rock-boring diamond drills are no new things.) He has even detected evidence of the employment of lathes with fixed tools and mechanical rests. There is now little doubt as to the value of ensilage as a food for cattle, for there is abundant testimony from various parts of the country, where the experiment has been tried of building silos, that beasts thrive upon the compressed fodder that had been stored therein. For instance, its value as a fatting food for cattle has been demonstrated upon Mr Stobart’s estate at Northallerton, by a carefully conducted trial. Twelve beasts were divided into two lots of six each. All were alike given the same quantity of meal and cake. Besides this, one lot received daily, each beast, twenty-four and a half pounds of hay and ninety-five pounds of turnips; the other lot receiving in lieu of hay and turnips each seventy-five pounds of ensilage. At the beginning of the experiment, the animals were weighed separately. At the end of one month they were again weighed. All of course showed a great advance; but those fed on ensilage totalled up to a figure which was forty-nine pounds better than the total exhibited by those fed in the more orthodox style.