BOTANICAL NOTES

C. E. Bessey
1903 Science  
of Lepirloder~rlron, Calamites and Artisia. Like the concretions, these fossils are generally considerably lighter in weight than the ordinary rock. I t is interesting also to note that I found several thin veins of turquoise
doi:10.1126/science.18.451.246 pmid:17775488 fatcat:vt3ghm4zifearmpjnghg6yy6p4