JtlLT 17, 1908] 



SCIENCE 



79 



is equally desirable that the teacher of 

 engineering should from time to time both 

 refresh and revise his knowledge of the 

 fundamental things in mathematics, to the 

 end that he may keep his methods up to 

 date and adapt his teaching to the kind of 

 mathematical instruction which his stu- 

 dents have had and avoid those methods 

 and those forms of expression which have 

 long been out of use. 



In closing, I wish to add that the rapid 

 increase in engineering students has so 

 greatly increased the demand for mathe- 

 matical instructors having some knowledge 

 of engineering that it would be highly de- 

 sirable if more attention should be paid to 

 the preparation of men for such positions. 

 This can best be accomplished, perhaps, in 

 those universities having large engineering 

 departments by a closer correlating of the 

 work of the mathematical department with 

 theoretical work in engineering and mathe- 

 matical physics. It is to be regretted that 

 so little attention in this country is now 

 being given to these two fields of mathe- 

 matical activity. Institutions so situated 

 as to undertake it should offer to its stu- 

 dents graduate work in these lines in every 

 respect worthy of a doctor's degree, and 

 likewise to its instructors both opportunity 

 and encouragement to do research work in 

 this broad and fruitful field of human en- 

 deavor. Edgar J. Townsend 

 University op Illinois 



INTERNATIONAL FISHERY CONGRESS, 

 1908 



The Fourth International Fishery Congress 

 will convene in the city of Washington, 

 United States of America, from the twenty- 

 second to the twenty-sixth of September, 

 1908, to deliberate on important matters re- 

 lating to fishing and fish culture and to sub- 

 mit propositions for the benefit of the fisheries 

 to governments and to state, provincial and 

 local authorities. 



The congress will be organized and con- 

 ducted in conformity with the decisions for 

 the regulation of the international fishery 

 congresses decreed in Paris in 1900. 



The membership of the congress will con- 

 sist of government, state, and provincial repre- 

 sentatives, delegates from home and foreign 

 societies, corporations and persons invited by 

 the management of the congress, and persons 

 at home and abroad who are deemed to have 

 an interest in the purposes of the congress 

 and express a wish to take part in it. 



All members have the right to vote, to 

 participate in the discussions, and to make 

 independent propositions. In case a corpora- 

 tion should be represented by several dele- 

 gates, the members of this delegation have the 

 right to only one vote, which shall be east by 

 the delegate designated to the presiding officer. 

 The delivery of the card of admission gives to 

 members the right to take part in all the 

 enterprises and excursions projected by the 

 congress, to receive all the publications, and to 

 wear the insignia of the congress. The mem- 

 bers of the congress are required to conform 

 to its regulations and decisions. 



The membership fee is fixed at $2 for each 

 person, excepting the official representatives 

 of governments, who become members by 

 virtue of their credentials. 



In response to invitations extended by the 

 government of the United States, twelve 

 national governments have already signified 

 their purpose to be officially represented, and 

 delegates have been appointed by the gover- 

 nors of many of the states of the United 

 States. In view of the small number of the 

 nations which have formally indicated their 

 inability to officially participate and the large 

 number of persons who will attend as indi- 

 viduals or as representatives of important 

 fishery societies, the congress promises to be 

 important in its representative character, size, 

 and the value of its proceedings. 



All persons interested in the fisheries, fish 

 culture, and fishery administration, or in sci- 

 entific investigations and experiments related 

 to the fisheries are invited to attend the meet- 

 ings and take part in the discussions. To 



