In the letter quoted previously from D. H. Fitzliugli it is stated : " 1 

 do not kuow any fishculturists who have grayling except Seth Green 

 and Fred Mather, who obtained them last spring. Mr. Green collected 

 about one hundred eggs in the Ausable early in Maj^, and informs 

 nie he hatched nearly all at Caledonia, and that the fry are thriving. 

 George H. Jerome, one of our commissioners, had some on exhibition 

 at the Michigan State fair. I do not know how many are in his posses- 

 sion." 



Fred Mather, in a letter to Forest and Stream, quotes the statement 

 from a letter from A. S. Collins, in whose hatching-house at Caledonia 

 the grayling eggs were cared for, that " the young fishes were larger at 

 six mouths old than the brook-trout at the same age." 



This is a like fact with that stated by Heckel and Kuer with refer- 

 ence to the grayling of Central Europe, that they grew very rapidly, 

 and attained mature size when two years old. 



The average size of the grayling in the Ausable River is not more 

 than ten or eleven inches in length. It rarely attains the length of six- 

 teen inches, and the largest recorded weighed less than two pounds ; 

 the average weight is not more than a half-pound. 



The Old World species have attracted attention from a very early 

 period ; the impression that the fish possessed the odor of thyme sug- 

 gesting the name of ^t3//a/Ao? to the Greeks.* 



Linmipus called the grayling of Europe and Siberia iSalmo thymalus. 

 Artedi placed it as 2^0. 3 of his genus Coregonus. The names Salmo 

 thyniallus and Goregomis thymallus were applied to all species known until 

 Richardson described a species from Northern British America, col- 

 lected by Lieutenant Back during Sir John Franklin's first Arctic jour- 

 ney, as Coregonus signifer ; stating that the specific name "standard- 

 bearer" api)lied to the character of the great dorsal fin. At the same 

 time, a supposed second species was described, which he called Gorego. 

 nus thymaUoides, and which, in the Fauna Boreali-Americana, published 

 later, he suggests to be the young of T. signi/er, and, at the same timej 

 changes the generic name to Thymallus. 



After this, additional names were made, supposed to represent species 

 of the Old Work>, until the list was increased to the number of ten. 

 Nilsson gave the name of Thymallus vulgaris toagraylingfound in Norway 

 and in Lapland. Agassiz named the grayling of Central Eiurope Thymallus 

 vexilUfer; a T. thymallus from Denmark was named by Kroyer ; Valen- 

 ciennes gave the names of Thymalus gymnothorax to one from Berlin, 

 Germany ; T. gymnogaster to one from the Neva near St. Petersburg ; 

 T. ^liana to one from Lake Geneva ; T. Pallasii to one from Russia ; 

 T. ontariensis to one supposed to have come from the vicinity of Lake 



* The grayling, ia Northern Italy, is still said to have the common name of Tetnolo. 

 In Germany, it has the name of Aesch, referring to its gray or ash-colored tint, a deri- 

 vation similar to that of its English name grayling, which is said to have been first 

 used by Willughby, who published a history of fishes in 1686. 



