In the engraving of the bevel core wheel is shown (to the right of it) a wood cog as we furnish them from the machine. The now extensive demand, built up by close attention to this small but very important branch, for now over fifteen years, has made it necessary to prepare ourselves by keeping a larger stock of the material as well as improved machinery for making them. At the proper time each year we have cut of hickory, sugar, (often termed maple,) and some oak specially for this purpose, and we have at no time less than 25,000 feet of the best lumber, part of it being from three to six years old. For this purpose we use only the butt logs cut from trees standing exposed in the out-skirts of the timber. When cogs are wanted to refill a wheel it is best to take out one of the old ones and fit a temporary one in place of it, then send to us by express, with your order by mail, or with the cog, of the number wanted. The cogs will be shanked and place cut for the keys exactly as per sample, and all uniform, unless otherwise ordered. It is desirable for us to know about what the pitch of the gear is, although the projecting part of the cog is left of ample size to shape the tooth. We always box them, and ship by freight or express, as ordered. It is no uncommon thing for us to send cogs thus over a thousand miles from our works.