SPENCER MON-OBJECTIVE 

 BINOCULAR MICROSCOPES 



Possess all the features of construction which 

 experience has shown to be meritorious and advan- 

 tageous. Among them is one very distinctive 

 feature which distinguishes the Spencer, viz : 



Convergent eyepiece tubes 



which avoids the excessive and false conception of 

 perspective otherwise produced, giving a correct 

 interpretation of the object under examination. 

 Several models. 



Catalog sent on request 



Spencer Lens Company 



MANUFACTURERS OF 



No. 2H Mon-objective 

 Binocular— $270.00 



Microscopes, Microtomes, Projection Lanterns, Photo- 

 Microscopic Apparatus, Photo-lenses, Telescopes, 

 Optical Glass, Haemacytometers, Etc. 



BUFFALO, N. Y. 



JOURNAL OF IMMUNOLOGY 



OFFICIAL PUBLICATION OF 



THE SOCIETY FOR SEROLOGY AND HEMATOLOGY AND 



THE AMERICAN ASSOCIATION OF IMMUNOLOGISTS 



Edited by Arthur F. Coca 



Vol. IV. No. 6 CONTENTS NOVEMBER, 1919 



John A. Kolmer. The Influence of Desiccation upon Natural Hemolysins and 

 Hemagglutinins in Human Sera 393 



John A. Kolmer. The Nature of Thermolabile Hemolysins 403 



Hiram D. Moore. Complementary and Opsonic Functions in their Relation to 

 Immunity. A Study of the Serum of Guinea-Pigs Naturally Deficient in Com- 

 plement 425 



Ixdex 443 



Current Volume: Vol. IV, 1919— Price, $5.00 Domestic; $5.50 Foreign 



Back volumes can be furnished: Vol. I, 1916, Nos. l-5incl.: Vol. II, 1917, Nos. 1-6 inch; Vol. Ill, 1918, Nos. 1-6 



incl. Price perset: $18 00, Domestic; S18. 75, Canada; S19. 50, Foreign. Prices are net postpaid. 



Subscription Order for the Journal of Immunology 



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