Figure 7e Elm pollen grain after Feulgen 

 staining. Note that only the nuclei are stained. 

 Magnification 1000 x. 



Figure 8 a A type 2 organized clement in 

 optical cross section from a powdered pre- 

 paration of the Orgueil meteorite. Magnifi- 

 cation 1000 X. 



{■im- 



^<^V ^' 



Figure Sb The same organized element pho- 

 tographed by focusing on its top. Note that 

 the protrusions have dark centers indicating 

 hollow tubes. Magnification 770 x . 



Figure Sc Cross section of an organized ele- 

 ment similar to that shown in Figs. 8 a and 

 8 b. This object occurs in a petrographic thin 

 section of the Ivuna meteorite. Magnification 

 770 X . 



Figure 8d Ambrosia pollen grain after Grid- 

 ley staining in optical cross section showing 

 solid protrusions. Magnification 590 x . 



Figure 8e The same preparation showing the' 

 characteristic tricolpate, triporate structure of 

 the Ambrosia pollen grain. Magnification 

 590 X. 



