GREAT LAKES COREGONIDS 



625 



Table 86. — Showing the movement of the whitefish in the pound nets of Lake Huron, according to 



data gathered from the operators of these nets 



Locality 



Nets set 



Depth, 

 in 

 feet 



Appearance 



Maximum abun- 

 dance 



Disappearance 



Return in autumn 



Lake Huron proper: 

 Alpena, Mich.. 



East Tawas, 

 Mich. 



Point Au Ores, 

 Mich. 



Port Huron 

 Mich. 



Cockburn Is- 

 land, Ontario. 



Duck Islands, 

 Ontario. 



Providence 

 Bay, Ontario. 

 North Channel: 



Blind River, 

 Ontario. 



Thessalon, On- 

 tario. 



Gore Bay, On- 

 tario. 



Kagawong, On- 

 tario. 

 Georgian Bay: 



Killarney, On- 

 tario. 



Wiarton, On- 

 tario. 



April, first week. 



do.. 



do.- 



March, last week. 

 June, last week.. 

 June, first week.. 

 May, first week.. 



do 



do 



June, first week.. 

 May, first week.. 



do 



do.. 



26-40 

 25-50 

 25-50 

 20-30 

 45 

 30-40 

 45-fi0 



25 

 25 

 25-30 

 35 



65-75 

 35-40 



May or June. 



June, first week... 

 April, first week... 

 March, last week.. 



June, last week 



do.. 



July, third week.. 



May, first week... 

 do.. 



June- July 



June. _ 



April to May 15... 

 April 



August and Sep- 

 tember. 

 July and August. 



August 



May and June. 

 do-_ 



August, first week. 



July, middle 



June, first week... 



June, last week 



October, third 



week. 

 do.. 



September, first 

 week. 



July, third week.. 



do. 



June, first week. 

 do 



May, last week 



June, second week. 



June 



June, last half.. 



June and July. 

 June, last half.. 



July, last week 



July, third week _ 



July, first week. 



September, mid- 

 dle. 



September, first 



week. 

 September, third 



week. 

 October, third 



week. 



October. 



October, first 



week. 

 Do. 



September, first 



week. 

 October, third 



week. 



(No fall run; mud 

 bottom.) 



Table 87. — Records of the occurrence of Coregonus clupeaformis in Lake Superior 



[For each record is given, if known, the date and locality, the kind of gear used to make it, the depth of water and character of the 

 bottom where made, and the number of preserved specimens examined] 



Port from which nets 

 were set 



Sault Ste. Marie, Mich. 



Marquette, Mich 



Ontonagon, Mich 



Apostle Islands, Wis... 



Port Arthur, Ontario. .. 

 Rossport, Ontario 



Coppermine Point, On- 

 tario. 



Batchawanna, Ontario. 

 Borrowed specimens: 

 Sault Ste. Marie, 



Mich.! 

 Port Arthur, On- 

 tario. 3 

 Apostle Islands, 

 Wis.* 



Date 



June 14,1922 



Feb. 8, 1921 

 Aug. 10,1921 

 Aug. 25,1921 



July 11,1922 



July 20,1922 

 Aug. 5, 1922 

 Sept. 25, 1923 

 June 24,1922 



June 17,1922 



Location 



10 miles NW. by W. X W. of Point 

 Iroquois Light. 



Marquette Bay. 

 6 miles NNW... 



Between Cat and South Twin 

 Islands. 



Black Bay off Demers Point 



Moffat Strait.. 



do.. 



Agawa Bay... 



Batchawanna Bay. 



Kind of net 



Depth, 

 in 



fathoms 



2V 2 and 234- 

 inch gill. 



lj^-inch gill.. 



Pound 



2Yi and 234- 

 inch gill. 



234-inch gill.. 



Pound 



do._ 



2J/6-inch gill.. 

 4J^-inch gill.. 



Pound. 



3S 



5 



20-38 



15-20 



4 



13-14 

 40-50 



3-13 



Bottom 



Sand 



Sand-clay. 



Sand. 



Mud. 



Clay-sand.. 

 Mud 



Clay-sand.. 



Preserved 

 specimens 

 examined 



1 Only specimens taken in lift. 

 1 Field Museum collection. 



3 U. S. National Museum collection. 



* Wisconsin Geological Survey collection. 



