STATE GEOLOGIST. 21 



lower part of the State without great sacrifices, I visited the 

 Sault, in the last of May, and purchased, at a great saving, a 

 Mackinaw boat, which proved to answer our purpose perfectly. 

 Early in June, the surveying corps made a rendezvous at East 

 Saginaw. Besides Dr. Miles and myself, the party consisted of 

 Mr. White, Mr. N. H. Winchell, who had been engaged as 

 botanical assistant, and two voyageurs, who had been secured 

 at the Sault. After carefuRy exploring the whole coast, from 

 the mouth of the Saginaw river to the vicinity of White Eock, 

 the party returned and entered upon the examination of the 

 west coast of the Bay and Lake, which was continued to Mack- 

 inac. After an examination of this and the neighboring islands 

 we coasted along eastward to Drummond's Island, which, at 

 this time and subsequently, was completely circumnavigated. 

 We proceeded thence to the Bruce and Wellington mines, and 

 thence to the Sault. Hero my plan of operations called me to 

 another part of the State; and as Dr. Miles, who had left the 

 party at Thunder Bay on the 4th of July, did not rejoin it at 

 the Sault, Mr. White led the explorations for the remainder of 

 the season. His instructions took him back to the islands at 

 the head of Lake Huron, and thence to Mackinac. At this 

 place Dr. Miles rejoined the party. Thence they coasted along 

 as far as Northport, on the south side of Grand Traverse Bay, 

 following all the indentations of the coast, and entering all the 

 small lakes accessible by navigable streams. From this point 

 the party returned home. 



In August I made an excursion to Cleveland and the Cuya- 

 hoga Palls, for the purpose of procuring data with which to 

 compare my observations upon the coal measures and other 

 perplexing strata in our own State. 



In September, I made, by request, a special examination of 

 the coal measures located in the vicinity of the Detroit and 

 Milwaukie railway, in Shiawassee county, and transmitted the 

 results of my observations. to W. K. Muir, Esq., Superintendent. 



I subsequently revisited Grand Bapids, and made examina- 

 tions of some portions of Ionia, Clinton and Ingham counties. 



