After the discovery of these entombed amphibians Sir William Dawson was given a grant of £50 from the Government Fund by the council of the Royal Society of London, to aid in the extraction of these trees and the collection of their contents. The trees were carefully taken out and their contents examined; the portions containing the animal remains were carefully boxed to be taken to Montreal for final cleaning and study. Erosion goes on rapidly at the South Joggins, but no one has paid any attention to the occurrence of Amphibia along the coast of Nova Scotia within recent years. [Illustration: Fig. 5. Dawson's tree No. 13 at the South Joggins, Nova Scotia. Upper part, _in situ_, in the reef after it had been exposed by blasting. (After Dawson, based on a photograph.)] (_q_) A deposit which will be of undoubted interest in connection with the occurrence of Amphibia in the Coal Measures is that which outcrops along the banks of Rock Creek in the South western part of Douglas County, Kansas, in Marion Township (Township 14 south, Range 18 east, SW. and SE. quarters of section 7), about 2 miles from the now-abandoned post-office of Twin Mounds, so called from the two flat-topped, elongated mounds of Oread limestone to the west of the town. The interest in these beds is not due to the discovery of Amphibia in them, but the possibilities of such discoveries. This is indicated by the occurrence of fossils, in nodules similar to those obtained from Mazon Creek, which are identical generically, nd in most cases specifically, with the Mazon Creek animals and plants. The fossils so far collected from this interesting locality are: Insecta (Identified by Dr. E. H. Sellards). _Spiloblattina maledicta_ (Scudder). The basal half of a front wing. _Etoblattina_ sp. The hind wing of a cockroach. Arachnida. _Anthrocomartus_. Impression of the body. _Prestwichia danæ_ M. & W. Nearly complete specimen. Crustacea. _Acanthotelson stimpsoni_ M. & W. Three nearly complete individuals. Plants (Identified by Mr. J. C. Carr, of Morris, Ill.). _Pecopteris_ sp. _Sagittaria reticulata_ Lesquereux. _Annularia longifolia_ Lesquereux. _Annularia inflata_ Lesquereux. _Pecopteris villosa_ Brongniart. _Neuropteris decipiens_ Lesquereux. _Pecopteris serpulifolia_ Lesquereux. By far the most abundant plant is _Pecopteris_. The fossils occur in definite strata of nodules immediately above a 10-inch coal seam which is worked for local consumption. The coal lies near the base of the exposure in the more western portion of the outcrop, but it is raised by an anticlinal fold to near the top of the creek-banks by the bridge across Rock Creek, along the banks of which the shales are exposed. Nodules containing fossils are found most abundantly at the western exposure on the McKinzie place, only a few having been found near the bridge.