126 FUNDAMENTALS OF S U B M I C RO S C OP I C MORPHOLOGY 



Fig. 84. Electron micrographs of globular colloids, a) Macromolccules of haemocyanin 



(Williams and Wyckoff, 1945). b) Macromolecules of haemocyanin aggregated in 



fours (PoLSON and Wyckoff, 1947). c) Tobacco mosaic virus (Wyckoff, 1949). 



d) Cn'stallizcd tomato bushy stunt virus (Wyckoff, 1949). 



