Geological Papers. 131 



early air-breathing vertebrates than the mode of attachment of the 

 ribs. No such difference as Dlplocaidus presents is found any- 

 where among the members of the reptilian orders. 



I by no means wish to suggest that Diplocaulns should be sepa- 

 rated from the microsaurians as a distinct order, but that that group 

 is entitled to a higher rank than that of a family I do believe.' 

 Furthermore, as I have said, Cfoss'delas, so far as the vertebrae are 

 concerned, must be associated with Diplocaidus. If I am correct, 

 however, in my recognition of the skull of this genus, it is of a 

 widely different type from that of D'rplocaulUs; and the limb bones 

 also, so far as I have determined them, are very different. The 

 genus indeed represents a distinct family from Diplocaulidse — the 

 Crossotelidse, further details of which I shall give in a future paper.' 



SOME NOTES ON THE OLYMPIC PENINSULA, 

 WASHINGTON. 



By Albert B. Reagan, La Push, Wash: 

 INTRODUCTION AND ACKNOWLEDGMENTS. • 



'T^HE field-work upon which this paper is based has been carried 

 -■- on as time would p^-rmit for the past four years, the most of 

 the work being done during the summer months of each year. The 

 type fossils collected are in the writer's collection at La Push, Wash.; 

 duplicates are to be found in the geological collections of the Le- 

 land Stanford Junior University and in the museum of the Kansaa 

 Academy of Science. 



The Olympic peninsula is a very difficult region in which to do. 

 geological research work. There are but two wagon roads in the 

 entire area west of Mount Olympus. One of these roads, aggre-' 

 gating some forty miles in total length, connects Port Angeles with 

 Lake Crescent and Port Orescent, and the latter again with Lake 

 Crescent; the other road extends from East Clallam, on the Strait 

 of Juan de Fuca, south to La Push, of the Pacific front, a dis-* 

 tance of about fifty miles. Trails extend along the beach of both 

 ocean and strait. Trails also extend from West Clallam to Ozettef 

 lake and the Dickey lake country, and from the latter on toQuilla- 

 yute Prairie. Another trail connects Forks with the Hoh country. 

 A few short trails also branch off from the main trails here and 

 there. These afford all the means of gaining access to the interior, 

 except by canoe on the various streams; for off of the trails and 

 roads the fallen timber, underbrush and ferns make the forest such 

 a jungle in most places that one cannot travel half a mile an hour. 



