12 



stigations among the personel of the navy for which I have 

 to thank General Bornemann of the naval medical service and 

 Admiral Nyholm. 



I am further much indebted to the Senior Physician, Dr. 

 Tobiesen, Prosector R. Fogh, Prof. Bie, Assistant Physician, 

 Dr. M. Christiansen, and Dr. Adolph Meyer for permission 

 to use material from the 0resundshospital, the Blegdamshospital 

 and Dr. Meyer's Clinic as well as for the help both they and 

 the nursing staffs of the hospitals have extended to me in the 

 collection of sputum and other material. Finally I thank Prof. 

 Carl Hansen for allowing me to carry out investigations at 

 the canine clinic of the Veterinary Institute. 



A small part of the contents of this paper has already 

 been published in the following contributions: 



Oluf Thomsen, Martin Kristensen, & Fr. Thorrorg: Un- 

 dersogelser over Influcnza'cns (,,den spanske Syge"s) Aarsagsforhold. 

 Copenhagen 1918. 



Martin Kristensen: Undersogelser over Forekomsten af Pfeif- 

 fers Influenzabacil. Hospitalstidende 1919, 777 and 801. 



Oluf Thomsen & Martin Kristensen: Recherches sur la 

 bacteriologie et 1 epidemiologic de l'influenza de 1918—1919 („la grippe 

 espagnole"). Acta medica scandinavica 53, 421 (1919). 



Max Christiansen & Martin Kristensen: 1) Tre Tilfaelde af 

 Meningitis, fremkaldt af Pfeiffers Bacil. Ugeskrift for Laeger 1921, 551. 



2) Qua Ire cas de meningite provoqu6s par le bacille dc Pfeiffcr. 

 Acta medica scandinavica 55, 297 (1921). 



Martin Kristensen: Sur l'apparition du bacille de Pfeiffer 

 dans une epidemic de grippe a Copenhague, Janvier 1922. Comptes 

 rendus de la Societe de Biologie, 86, 464 (1922). 



