( 902 ) 



American Journal of Mathemadcs, published under thc auspices ofthe Johns 

 Hopkin s University; vol. X, number 1. Baltimore, iSS^y; br. in-4°- 



Annals of Mat hématies.. Office of publication : University of Virginia; vol. III, 

 number 4. Charlottesville, august 1887; br. in-4°. 



Bihang till kongl. Svenska Vetenskaps-Akademiens Handlingar. Stockholm, 

 1887; 4br. in-8''. 



