Half hours with insects . ^ are not compelled to doso unconsciously and in obedience to certain laws of me-chanics which they are forced to follow. The mechanical theory of the formation of the bees cell 27. Leaf Cutter IJee at work. 348 HALF HOUKS WITH INSECTS. [Packard. Fig, 259.

---

Size: 1463px × 1708px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade1880, booksubjectinsects, bookyear1881