XII Journal of Agricultural Research voi. iii 



Changes in Composition of Peel and Pulp of Ripening Bananas 



Page. 

 Fig. I. Constant-temperature humidor 193 



Coloring Matter of Raw and Cooked Salted Meats 



Pig. I. Spectra of hemoglobin and some of its derivatives: A , Absorption spec- 

 trum of a solution of oxyhemoglobin; B, absorption spectrum of a 

 solution of NO-hemoglobin; C, absorption spectrum of a solution of 

 hemoglobin prepared by treating a solution of oxyhemoglobin with 

 hydrazin hydrate; D, absorption spectrum of a solution of met- 

 hemoglobiu prepared by treating a solution of oxyhemoglobin with 

 potassium ferricyanid ; E, absorption spectrum of an alkaline solution 

 of hematin; F, absorption spectrum of a solution of hemochromogen 

 prepared by treating an alkaline solution of hematin with hydrazin 

 hydrate; G, absorption spectrum of a solution of NO-hemochro- 

 mogen 215 



Studies in the Expansion of Milk and Cream 



Fig. I. Specific gravity of milk and cream at 3S°/4° C, showing value of a 



and ^ 261 



2. Specific gravity of milk and cream at 35°/4° C, showing relation be- 

 tween density and percentage of butter fat 261 



Identification of the Seeds of Species of Agropyron 



Fig. I. Detail drawings of dorsal view of .4 9ro/'>'; ore spp.: A, Agropyron repens; 



B, A . smilhii; C, A . ienerum 278 



2. Detail drawingof ventral viewofseedsofj49ro/>}'rorespp.: A, Agropyron 



repens; B, A. smithii; C, A. teneruin. (See "Errata.") 279 



3. Side views of basal portions of seeds of Agropyron spp., showing the 



relative projection of the rachilla: A , Agro pyron repens; B, A. smilhii; 



C, A . ienerum. (See ' ' Errata. ") 280 



4. Edge of rachilla in Agropyron spp. , showing shape and comparative size 



of bristles: A , Agropyron repens; B, A. smithii; C, A . ienerum 280 



Moldiness in Butter 



Fig. I. Graph showing the effect of salt on molding 308 



Susceptibility of Citrous Fruits to the Attack of the Mediter- 

 ranean Fruit Fly 



Fig. I. Cross section of peach, showing egg cavity of the Mediterranean fruit 



fly with eggs 320 



2 . Cross section of peach , showing the general shriveling of the walls of the 



egg cavity and the separation of the eggs 320 



3. Section of grapefruit rind, showing two egg cavities, one in cross section . 321 



Three-Cornered Alfalfa Hopper 



Fig. 2. Map showing distribution of the three-cornered alfalfa hopper {Sticio- 



cephalafesiina) in the United States 344 



Ability of Colon Bacilli to Survive Pasteurization 



Fig. I. Curve showing results of heating cultures of colon bacilli for 30 minutes 



at various temperatures 404 



