QDuyart. Fowrn.Micr Seo Vol 43 NSH. 3. 
Les 
= A8. 49, 
W.S. Perrin, del Huth, IathT London 
Magnification, Figs. 25-32, 34-37. 179%. 
o- 33, Pots fie 4.9. eal, ’ 
