ILLUSTRATIONS. 



PLATES. 



Page. 

 Pl.\te I. University of Illinois, bird's-eye view of agricultural building 



and experiment fields 28 



II. Fig. 1. — University of Unnois, elass in agronomy studying root 

 develoi)ment of corn. Fig. 2. — University of Illinois, class 

 in agronomy collecting samples of soil 28 



III. Fig. 1. — University of Illinois, soil fertility laboratory for analy- 



sis and synthesis of soils and fertilizers. Fig. 2. — Univer- 

 sity of Illinois, class in agronomy in pot culture laboratory. . . 28 



IV. Fig. 1. — Universityof Illinois, soil physics laboratory. Fig. 2. — 



University of Illinois, farm crops seed laboratory 28 



Y. Michigan Agricultural College, Agricultural Hall 40 



VI. Fig. 1. — Michigan Agricultural College, students making me- 

 chanical analyses of soils. Fig. 2. — Michigan Agricultural 



College, soils laboratory and class room 40 



VII. Fig. I. — University of ^Minnesota, Dairy Hall. Fig. 2. — Univer- 

 sity of Minnesota, emasculating and cross pollinating wheat. . 50 

 VIII. Fig. 1. — University of Minnesota, Centgener thrashing machine 

 and fanning-mill se])arator in use in the field crop nursery. 

 Mg. 2. — University of ^Minnesota, machine for jilanting grain 



in nursery beds 50 



IX. University of Nebraska, agricultural building .• 52 



X. Fig. 1. — University of Nebraska, field crops lalioratory, students 

 judging seed corn. Fig. 2. — University of Nebraska, soils 



laboratory 52 



XI. Fig. 1. — University of Nebraska, apparatus for making determi- 

 nations of soil moisture. Fig. 2. — University of Nebraska, 



experiment ijlats 52 



XII. Fig. 1. — University of Nebraska, seed laboratory. Fig. 2. — I'ni- 



versity of Nebraska, a corner in the seed storeroom 52 



XIII. Ohio State University, Townshend Hall 58 



XIV. Fig. 1. — Ohio State University, mechanical analysis of soil. Fig. 



2. — Ohio State I'niversity, torsion Imlance used in soil phys- 

 ics laboratory 68 



XV. (iottingen Agricultural Institute, main building 76 



XVI. Fig. 1. — Gottingen Agricultui-al Institute, looking southeast. 

 Fig. 2. — Gottingen Agricultural Institute, looking northeast 



from institute buildings acros.^-'. the exj)erinient plats 84 



XVII. Gottingen Agricultural Institute, greenhouse 84 



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