Five day with a little rain in the afternoon. Sunday July 31-1910 Port au Choix. Collected one day in beds 10 and 11 of Logan's section from the French fishing village Port au Choix on the gulf side of the peninsula all the way to Point Riche lighthouse. Distance about 3 miles. On the southern side of the French fishing village one sees deep red dull dullomite almost without fossils. These are probably all of Logan's zone 9.=8 a H and 9 a I Further south appear beds of zone 10. These one then follows a long distance along the strike and one gets into zone 11 before one were aware of it. There is nothing to distinguish the two zones other than the fossils. Zone 10 and 11 consist of a series once a less heavy bedded, grey to light greenish, once a very thinly limestone that under the overweather head down into a sharp gravel. The higher beds of zone 11 head down into larger flats and overweather into well joint siltstone. In these higher beds that are crowded with Lepidodictias and some trilobites. The gastropods are here much rarer and one sees as a rule only small specimens. The grey bed of zone 11 is in the lower half and is decidedly local. For a long time one comes on these beds and because one saw no sponges thought one were still in zone 10. All of our Eucystomites and most of the siphuncles of Endoceras and probably the Orthoceras are from zone 11. In the grey bed occur the first decided devill pterinacyprae but these too are decidedly local and we did not