Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXVII. No. 6. — Skptember, 1901. 



THE ARC SPECTRUM OF HYDROGEN. 



By O. II. Basquin. 



With Two Plates. 



Ikvestigations on Light and Heat made and published wholly or in part with Appropriations 



FROM the RuMFORD Fu.ND. 



MARINE BIOLOGICAL LABORATORY. 



Received 



/^^A 



Accession No. '--.../.}y..>J>.Z.... 



Given by 4«?^?r?^vrr..<<<i^^ 

 Place, 



***No book OP pamphlet is to be pemoved fpom the Iiab- 

 opatopy uiithout the pepmission of the Tpuslees. 



