68 WISCONSIN AGEICULTUEE. 



143 — The specimens of Milwaukee Brick, made by machineTy 

 and by the common process, were such as few places except 

 Milwaukee can furnish. The pale color of these brick often 

 lead the stranger to suppose them of inferior quality — a supposi- 

 tion that soon vanishes on the slightest examination. The want 

 of redness, the usual color of brick in other countries, is owing 

 to the entire absence of iron in the clay, as was ascertained by 

 Prof. Silliman, of Yale College, New Haven. The brick made 

 by the steam-press are supposed to be the best, as well as the 

 most beautiful ; for these brick when built up into fine buildings 

 are not without beauty. The clay is first dried on the boiler of 

 the steam engine, then pulverized and screened. It is next sub- 

 jected, in a dry state, to an immense pressure in the smoothly 

 polished moulds, and burnt in the usual way. 



150, — The assortment of Iron Wire Screenery, exhibited by 

 S. S. Daggett, of Milwaukee, by whom it is extensively manu- 

 factured, consisted of a Wheat Screen, Chess Screen, a Screen 

 for separating different kinds of wheat ; a Screen for Oats, for 

 Grass Seeds, and for separating Cockle Seed. 



Some improvements have recently been made in the manner 

 of weaving these Screens, rendering them more useful and 

 durable. 



149. — A Loom, constructed entirely of wood, capable of work- 

 ing 15 to 20 yards of cloth per day, invented by John G. Gar- 

 relson, of Iowa, appeared to be well adapted to a new country 

 where men have to construct the machinery used in their fami- 

 lies of the scanty materials at hand. It should be known to all 

 who are about to penetrate far into the wilderness in search of a 

 new home. 



Much interest was imparted to the exhibition by the jaw-bone 

 of a Mastodon giganteus found buried six feet deep in the ground 

 at Terre Coupee Prairie, Michigan, and exhibited by Mr. A. H. 

 Taylor. This bone was the right branch of the lower jaw, con- 

 taining three teeth, the anterior one much worn, especially on 

 the exterior side. Upon examination it was found that this 

 fragment exhibited evidence that the great Mastodon had one 

 more tooth than had been assigned to it by naturalists, so that 



