Indeterminate Fossils. 



60 



0210 



0210 FOSSILS OF INDETER- 

 MINATE BIOLOGICAL 

 CHARACTER. 

 Bohm. 8143. Literarisclie Bemer- 



kimg Tiber Porocystis pruniformis 



Cragin. 



0220 FOSSILISATION. 



Chapman. 8205. Some pyritized 

 sponges from Queensland. 



Burling. 8176. Photographing 



fossils by reflected light. 



Debes. 8243. Zur Technik der Fora- 

 miniferen-Praparation. 



Delkeskamp. 8249. Mikrophoto- 

 graphie im Dienste der Palaontologie. 



Merriam. 8563. The fauna of 

 Rancho la Brea. 



Meunier. 8577. Influence de la 

 structure auatomique de certains tests 

 fossilises sur la production d'une 

 variete nouvelle de silice fibreuse. 



Tornquist. 8775. Konservierungs- 

 metliode fiir Bernsteineinschliisse. 



