Hankinson. — A Michigan Fish Survey 37 



River, Lake Huron, Makinac Straits, Lake Superior, and 

 Lake Michigan and also the deep waters of Lake Huron, 

 Lake Superior, and Lake Michigan. Limitations in time 

 and funds for this Survey have not permitted very thor- 

 ough collections to be made at any one of the places, but 

 in nearly every case, enough specimens were taken and 

 enough observations made to give a good idea of the 

 general character of the fish fauna of the place ; and the 

 collections contain most of the smaller species together 

 with young of many of the larger ones. At every place 

 where fish are taken, notes are made on the following: 

 locality, date, time of day, area fished, character of water, 

 bottom, depths, currents, aquatic and littoral vegetation, 

 invertebrates, vertebrates other than fish, fish seen and 

 not taken, fish taken, sky, wind, precipitation, air tem- 

 perature, and water temperature. Photographs were made 

 to show the vegetal and other features of the most favor- 

 able fish habitats. In all cases efforts were made to get 

 information from fishermen and others familiar with the 

 fish of the region. Such was in all cases freely given, 

 and it was gratifying to find how willing people were to 

 co-operate and to see the good interest that they took 

 in the scientific work. Commercial fishermen were espe- 

 cially obliging and allowed me to accompany them in 

 their boats to their nets and to take what I wanted from 

 their hauls for specimens. They are desirous of more 

 knowledge of the creatures by which they make their 

 living and welcome the results of scientific work. Some 

 very material help and much encouragement were ob- 

 tained from persons met, who were connected with the 

 State Fish Commission or with the State Game, Fish and 

 Forestry Department. 



An important source of material and notes has been 

 the efforts of certain teachers and other reliable per- 

 sons, capable of collecting small fish and furnishing ac- 

 curate notes with them. Whenever such persons are 

 found, who are willing to assist in the work, directions 

 are sent them for getting, preparing and shipping mate- 

 rial. After receiving this, the writer studies it and returns 



