GEOLOGICAL AND NATURAL HISTORY SURVEYS. 167 



On the subject of coal Doctor Houghton refers to the report of 

 Mr. Douglass, " From facts now before me," he says, " I am led to 

 hope that coal will be found in the elevated hills of the northern 

 part of the Peninsula, easterly from Little Traverse Bay." Later 

 investigations, however, show that these hills are underlaid by 

 Hamilton limestones. 



Doctor Houghton speaks with deep interest of the work in the 

 «oological and botanical departments and fully appreciates the in- 

 Eep:irableness of geological and topographical investigations. 



The report of the State zoologist, Doctor Sagcr, consists of a cata- 

 logue of the known species of animals belonging to the State. The 

 aggregates of the large groups, as there known, are as follows : Mam- 

 mals, 18 species; birds, 1G6 species; reptiles, 18 species; amphibians, 

 11 species; fishes, 22 species; moliusks, 76 species. 



The report of the State botanist consists essentially of a list of 

 observed plants in the State, alphabetically arranged. 



The topographer's report of 21 pages is- arranged under the fol- 

 lowing heads: Topographical location of Michigan, tables of statis- 

 tics of the lakes, the lalves and lake coast, depth of the lakes, interior 

 peninsula lakes, periodical rise and fall of water in the lakes, super- 

 ficies drained by the central and upper divisions of the St. Lawrence 

 Basin, table showing the rise of water from March, 1830, to August, 

 1838, rivers, United States Survej'^, Levels, maps, etc. 



The report of assistant geologist, C. C. Douglass, covers 11 pages 

 and relates to Ingham, Eaton, and Jackson counties. He says that 

 in T. 3, N. 1 E. a series of isolated ridges begins on section 34 and 

 extends in a northeast direction across sections 13, 23, 24, 20, and 

 27, having an altitude of from 20 to 80 feet. A second and nearly 

 parallel elevation was noticed, commencing on section 3, in the same 

 township, and extending to section 34 in the adjoining town, having 

 an elevation varying from 20 to 40 feet. A third begins in the south 

 part of Vevey and extends in a northwest direction nearly through 

 the town, varying from 10 to 80 feet in height. At the village of 

 Mason, the Sycamore Creek passes through a ridge of diluvium com- 

 posed of stratified coarse sand and pebbles, slightly united by a 

 calcareous and ferruginous cement. It will be noticed that these 

 ridges are situated far from any of the morainic ridges mapped by 

 Chamberlin. 



After a fev\' pages devoted to timber, marshes and swamps, springs 

 and wells, streams, marl, bog iron ore, crag, bowlders, and clay, Mr. 

 Douglass speaks of the building and flagging stone of Ingham and 

 Eaton counties which he styles " the great sandrock formation." He 

 enumerates many localities and thinks the rock suitable in some of 

 its exposures for flagging and construction. This is chiefly the 



