~ (NUMBER 41. VOLUME VIL] The accompanying engravings are views of THE an improved Grain Drill, patented by Benja- Scientific American, min D. Sanders, of Holiday’s Cove, Brooke CIRCULATION 16,000. PUBLISHED WEEKLY Co., Va. Figure 1 is a back view of the Drill At 128 Fulton street, N. Y., (Sun… … tests upon the levers, M M. the twenty minutes the animal was insensible.
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![An illustration from M. Vitrvvii viri svae professionis pertissimi De architectvra libri decem, ad Avgvstum Cæsarem accuratiss. conscripsit & nvnc primvm in Germania qva potuit diligentia excusi, atq[ue] hinc inde schematibus non iniucundis exornati (1543)](https://img.insideoutlibrary.com/img/200/ia-mvitrvviivirisva00vitr-285-95.webp)