REPORT OF THE CIIEMIST. 87 



Average composition of American corn. 



Locality, Sec. 



Ash. 



Albumi- 

 noids. 



Nitrogen. 



Jl\ UJU l/Oi 



of 



(in «il yso8. 



T mvfwt", 



i-'V >» K. 9 v 



albuini- 



Highest 

 albumi- 





Per cent 



Per cent. 



Per cent. 





Pcr cent. 



Pcr cent. 





L SB 



10. 4G 



1. 67 



114 



7. 00 



13. 05 





1. 58 



10. 31 



]. 65 



£8 



7. 88 



] 2. 63 





L 55 



10. 39 



1. 66 



202 



7. 00 



13. 65 





L 43 



10. 54 



1. 69 



g 



9. 10 



12. 43 





1. 48 



10 06 



LGl 



20 



7. 88 



12. os 





1. 68 



10. 07 



1.61 



16 



8.40 



12.43 





1.57 



10. 75 



L 72 



15 



9. 28 



12. 25 





1.54 



10. 47 



1. 68 



13 



9. 10 



12. 25 





2. 23 



9. S9 



1.58 



4 



8. 93 



12. 25 





1. 56 



10. 26 



1. Gl 



11 



8. 40 



11. 73 



Among the determinations of the ash and nitrogen in the crop of 

 1883, given in the preceding tables, there is as little variation as in pre- 

 vious analyses, and the conclusions derived from the latter are con- 

 firmed. The average of all the determinations for each year and for 

 both together vary only in the hundredths of a per cent. Corn may be 

 said, therefore, without doubt, to be very constant in its composition 

 within narrow limits. An occasional exception will no doubt appear, 

 as is the case of the ash in serial Xo. 1986, from Colorado, which rises 

 to 3.08 per cent., but among over two hundred analyses this is hardly 

 remarkable. 



The averages for the States, as would be expected, agree well. Col- 

 orado is represented by only four specimens, which happen to be below 

 the average, while California, represented by eleven, raises the average 

 for the Pacific slope, which, in the previous report, after the analyses 

 of two specimens from Oregon, appeared very low. 



Such analyses by other investigators as have been collected since the 

 appearance of the last bulletin on this subject appear here in a table 

 by themselves. The results there given coincide with our own. 



Previous results showed that corn varied in weight from 53 grains 

 per hundred kernels to 23 grains, averaging about 37. How far lo- 

 cality and surroundings influenced this has been to a degree deter- 

 mined by the examination of specimens collected by the agents of the 

 Department from all parts of the Union. 



The averages of the results given in our original report follow: 



Corn, average weight of 100 kernels. 

 DENT. 



Locality. 



United States 



Middle States 



Southern States 



Northern Central States 



Northwestern States 



Southwestern States 



Mountain region 



Pacific States 



New York 



Pennsylvania 



New Jersey 



Maryland 



Virginia 



West Virginia 



Kentucky 



TeDnessee 



North Carolina 



South Carolina 



r o of 

 nples. 



Average. 



Highest. 



Lowest. 





Grams. 



Grams. 



Grams. 



1, 009 



30. 7475 



64. 1020 



13. 858G 



34 



30. 6963 



58. 1560 



27. 4900 



427 



40. 8233 



64. 1020 



15. 5040 



177 



33. 5430 



51. 2106 



13. 8586 



140 



29. 1013 



47. 2490 



16. 0737 



202 



39. 8208 



57. 6890 



22. 2990 



10 



32. 3279 



39. 1460 



16. 8545 



18 



34. 7727 



49. 1130 



21. 6030 



2 



31. 0393 



33. 3200 



28. 758C 



12 



34. 9457 



41. 3560 



27. 4900 



5 



44. 2956 



56. 6640 



35. 7330 



15 



42. 7112 



58. 1560 



34. 0010 



54 



43. 2024 



59. 7100 



24. 1600 



27 



39. 2584 



50. 8610 



26. 7720 



54 



42. 4498 



60. 9090 



28. 0280 



60 



45. 2508 



64. 1020 



29. 6330 



58 



42. 6440 



60. 6360 



30. 1470 



17 



37. 3088 



54.6680 



27. 1930 



