Apr. 3-sept. 2s. 1916 Illustrations xxi 



Page 

 Fig. 3. Curve of the number of species of molds sxu^iving dry heat for 30 min- 

 utes at a series of temperatures 164 



Effect of Water in the Ration on the Composition of Milk 



Fig. I. Grouping of cow and kind of ration fed cows 23, 24, 25, and 27 173 



Hyperaspis binotata, a Predatory Enemy of the Terrapin Scale 



Fig. I. Map showing the distribution in the United States of Hyperaspis 



binotata igg 



Tests op Three Large-Sized Reinforced-Concrete Slabs under Con- 

 centrated Loading 



Fig. 1. Diagram illustrating the method of obtaining "effective width" in 



reinforced-concrete slab tests 207 



2. Diagram showing location of strain -gauge points on top of slab 835 ... . 211 



3. Diagram showing location of strain-gauge points on top of slab 930. ... 212 



4. Diagram showing location of strain-gauge points on top and bottom of 



slab 934 213 



5. Concrete deformation curves for concentrated center load on slab 835. . 214 



6. Concrete deformation curves for slab 930 215 



7. Deformation cxu^'es for slab 934 216 



8. Deformation ctirves for slab 934, computed from first zero reading. ... 216 



9. Concrete deformation curves for slab 835 with 2 -point loading 217 



10. Concrete deformation ciu-ves for slab 934 with 2-point loading 217 



11. Steel deformation curves for slab 934 with 2-point loading 218 



12. Concrete deformation curves for slab 835 with 4-poLnt loading 219 



13. Concrete deformation ctu-ves for slab 934 with 4-point loading 219 



14. Deflection curves for slab 934 on first application of load 220 



15. Deflection curves for slab 934 on second application of load 221 



16. Deflection curves for slab 934 with 2-point loading 222 



17. Diagram showing effect of breaking load on slab 835 223 



18. Diagram showing effect of breaking load on slab 930 223 



19. Diagram showing effect of breaking load on slab 934 224 



20. Concrete deformation ctu^j^es for a 10,000-pound concentrated center 



load on slab 934. Variation in deformations plotted parallel to 

 supports 225 



21. Concrete deformation curves for a io,ooo-potmd concentrated center 



load on slab 934. Variation in deformations plotted perpendicular 



to supports 226 



22. Concrete deformation curves for slab 934. Lateral deformations 



plotted both parallel and perpendicular to supports 227 



23. Iso-deformation lines for slab 934 imder concentrated center load .... 228 



24. Concrete deformation ciu-ves for slab 934 under 40,000-pound 4-point 



loading. Deformations measured perpendicular to supports. Vari- 

 ation of deformations plotted parallel to the supports 229 



25. Concrete deformation etudes for slab 934 under 40,000-pound 4-point 



loading. Deformations measured perpendicular to supports. Vari- 

 ation of deformations plotted perpendicular to supports 230 



26. Iso-deformation lines for slab 934 xmder 40,000-pound 4-point loading. 



Deformations measured perpendicular to supports 231 



27. Ctu*ves showing effective width versus load (concentrated center load) . 231 



28. Ciu-ve showing effective width versus thickness 232 



