284 THE JOURNAL OF GEOLOGY. 
phenomena." It is with the hope of enlisting the codperation of 
American geologists, and others who may be willing to help, that 
this paper has been written. 
There are a number of small glaciers in the Siew Nevada 
mountains, larger ones on the old volcanoes of the Cascade 
Range and in British Columbia, and immense ones in Alaska. 
Opportunities for making observations on many of these glaciers 
will frequently arise, even to travelers, who, if willing, can con- 
tribute to the problem of the variations of glaciers. 
There are two glaciers in North America that are so 
frequently visited that we should secure a very complete set of 
records of them; they are the Illecellewaet in the Selkirk 
Mountains and the Muir in Alaska. JI add a short list’ of the 
observations that should be made, and the methods; many are 
simple, and easily made by travelers. 
OBSERVATION OF GLACIERS.? 
It is desired to obtain a general description of little known 
glaciers; to determine at the time a glacier is visited whether it 
is advancing, retreating or stationary; to determine the year of 
maximum advance or retreat ; to collect observations of travelers 
which may throw light on the extension of a glacier at an earlier 
«This committee representing various countries is as follows : 
Austria: Professor Ed. Richter, Graz. 
Germany: Professor S. Finsterwalder, Munich. 
United States of America: Dr. Harry Fielding Reid, Baltimore. 
Denmark: Dr. R. I. V. Steenstrup, Copenhagen. 
France: Prince Roland Bonaparte, Paris. 
Great Britain and Colonies: Captain Marshall Hall, Dorset. 
Norway: Dr. A. Ojen, Christiania. 
Russia: Professor Ivan Mouchketow, St. Petersburg. 
Sweden: Dr. F. U. Svenonius, Stockholm. 
Switzerland: Professor F. A. Forel, Morges; Dr. Leon Du Paquice Neuchatel. 
A representative of Italy has not yet been appointed. 
2In making out this list of observations and methods, I have had the advantage 
of consulting the papers of PROFESSOR FoREL in the Jahrb. des Schw. A. C., 1882-83, 
1883-84, 1890-91; the instructions of PROFESSORS KILIAN and COLLET in the 
Annuaire de la Soc. des Tour. du Dauphine, for 1891, and the memorandum of the 
Alpine Club, cited below. 
