Note 133 — Chapter IX · (continued 2)
Reading edition
This fibrous green substance is probably the columnar variety of serpentine known as Picrolite; it strongly resembles the specimens thus labelled in the London Museum of Practical Geology.
Reading edition
This fibrous green substance is probably the columnar variety of serpentine known as Picrolite; it strongly resembles the specimens thus labelled in the London Museum of Practical Geology.