LZT1007150: The Brazilian Silk Worm Exhibit, Philadelphia Exhibition, 1.(a) the Moth Laying Eggs ; (B) Silk-Worm One Day Old ; (C) Silk-Worm Three Days Old ; (D) Silk-Worm Seven Days Old. 2 Silk-Worm Spinning a Cocoon. 3.Cocoons. 4.Chrysalis. 5.Moths Emerging, Engraving 1876, US, USA, America, United States / Bridgeman Images