. Vron strengthening band. (a; Box <0 I I I ^Hole5^4^iaweter,6"apart ri^^^^ ; ^ Zr end U- 4^'-0''' {h) Side View of Grid. T K— - 4'-0" ^ d 3 :31 =3 :3 ^ I'dlameter "^ • • • 3 icy Grid. Fio. 41. " Box and grid " for steam sterilization. soil used for packing, before Hfting off the box, as it is rarely sterilized, and is a source of contamination. It

---

Size: 3277px × 1525px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, booksubjectplantdi, bookyear1923