= Ealbuminoids decrease, re the <i seeds — Pais detached front 
their glumes and lost with their store of nitrogen. 
For different species, however, different times are undoubtedly suit- 
able, and experience must be added to our chemical knowledge" to 
enable a rational decision to be arrived at. 
THE COMPOSITION OF THE ASH. 
The ash of many foreign varieties of grasses have been analyzed and 
the results collected and published by Wolff. Of American growth the 
ash of only a number of the wild grasses collected in 1878 have been 
examined. The results are here given: 
Ash analyses—Grasses. 
ee eet a = s = ros = o S 
Pee beet So [oO 18s Peas hee 
5 = | | oS Sea|ca!l ns.| oo is 
Name. Peedezloe | Be | BO) Ss oS ee eee 
feelas| & | 2 |Se) ee | s4 1S sate 
Pee me Oo [Om | aS: | me pee ee 
| 
Hierochloa borealis (Vanilla Grass} -.--. 7.42 | 2:55.|42.73 | 4.49 | 3.97 | 2.54 |31 51.) 4.54 jL2_-: .25 
Eleusine Indica (Wire Grass)-.-....---- | 2.69 | 4.24 |47.56 {10.09 |10. 27 | 4.10 }10. 27 | 9.52 |....- 1 26 
Eleusine Indica (Wire.Grass) .......---- 9.63 | 5.79 (24. 61-} 6.71. (13:65 | 7.38, |24.°79. 1-7. 399) ae ieee 
Eleusine Indica (Wire Grass) -.-.-.-.---. 9. 8£ | 8.55 116.25 | 9.61 {11.10 | 5.57 |30.98 | 4.55 |-_.-- 3. 55 
Uniola latifolia (Fescue Grass) ..-.-.... A, 92:12:63 (66.37 |-4.71 | .7.15 | 3:02:| 5.525) 5.19 SS 
Cynodon Dactylon (Bermuda Grass) .-. | 6.20 | 9.37 (30.29 6.05 13.44 | 5.00 |22.99 6.66 |..-..]...-. 
Cynodon Dactylon (Bermuda Grass)-..-.| 5.09 |11.31 30.27 9.46 7.99 | 2.96 |22.89 9.61 |..--. - 42 
Sporobolus Indicus (Smut Grass) ...-... 6.02'| 4.60. |27. 36 |11. 03_| 2.64 | 2.66 |33. 53: |12516 |" 222 [Eee 
Andrepogon Virginicus (Broom Grass).., 2.97 | 2.80 58.33 6.37 6.76 | 1.83 13.93 7.01 ]|.--.-|..-.. 
Andropogon scoparius ........--.------ 1. 33 jtrace.|64. 62 15.65 | 2.12 |. .58 |2..-.- 15: 70S 
Poa pratensis (Kentucky Blue Grass) --| 9.88 | 4.76 3025 6.30 4.81 | 3.23 |33.8L | 6.95 |-....|..... 
Poa serotina (Fowl Meadow Grass) .-.- 10.80 | 3.35 |87.10 | 3.80 6.70 | 2.92 (81.71 | 2.79 |..... . 83 
Dactyzoctenium Egypt.(Egyptian Grass). 8 37 | 4.42 (34.17 | 6.76 20.67 | 6.91 21.20 | 7.50 |.....]..... 
Panicum sanguinale (Crab Grass). .----- 6.40 | 4.02 30.93 | 6.04 4.40 | 7.98 (33.56 | 6.67 |... — 
Panicum maximum (True Guinea Grass)} 4.37 | 2.51 {16.51 | 7.77 |10.18 |14.16 |35.93 | 8.57 |....-]..... 
pLamenm obtusum =... -....------..-=:. 5.18 | 6.71 [48.60 | 4.20 | 5.91 | 3.13 |21.65 | 4.62 |.-~ a 
Fanieum virgatum (Tall ‘Panic Grass)_.; 5.50 | 3.56 |51.17 | 4.93 | 7.87 | 3.63 |18.76 | 3.36 |... 1, 22 
RIP ENE Bees so ces Ge oe 4.37 | 5.29 |45.10 ; 4.06 | 7.39 | 7.98 |22. 53. | 1.54 |-<..- qe 
Panicum Texanum (Texas Millet..-.... 8.48 | 4.63 (3431 | 6.55 | 7.39 | 4.57 |27. 95 |. 4. 54 |..-.. 1.58 
Panicum Crus-galli (Barnyard Grass) .- 4.27 3.69 42.18 11.48 | 7.23 | 5.52 |13.26 |12/00 |..... any! 
Panicum filiforme (Slender Crab Grass). 6.37 | 4:84 |40. 36 |12.17 | 4.69 | 5.18 |12. 98 113. 41 |.....]..._. 
Sorghum halepense (Johnson Grass) .....10.44 2.96 |22. 21 | 4.58 [12.87 | 6.73 |35. 72 | 3.68 | ee 81 
Chrysopogon nutans (Indian Grass) .... | 2.35 | 2.13 61.56 | 6.11 | 2.92 | 1.36 |16.84 | 6.74 |..... 
Muhlenbergia diffusa (Drop Seed)-.-..--. 6.65 3.39 |39.98 | 8.21 (11.95 | 4 39 |17.32 | 6.78 | - i 
Bromus unioloides (Schrader’s Grass)...| 8.79 5.61 | 4.84 16.84 | 4.43 | 4.64 37.20 16.38 |_._.. LF 
Bromus carinatus (Broom Grass) ..-.... | 9.29 | 3.94 |38. 33 | 3.36 | 6.19 | 2.19 31.61 |..---- |, 2: 17) 2.98 
Agrostis exarata (Browntop) - -. ....-. S01 | is 93.34. 63 | 3: 60:1-5.61 (3. 84 |38:.41- (S797 1 ee 
Paspalum leve (Water Grass) .....-.... | 6.18 | 5. 64 (44. 65 | 1.73 | 9 36 | 5.26 25.44 }.....- -60) 1 12 
Setaria setosa (Bristly Fox-tail) ......... BoE Nido) 42 SOU 3: B1- | 2. 31.) 1.562|395 3828 1.18 | 2.47 
Leptochloa mucronata (Feather Grass)..| 6.46 | 3.31 55.92 2.89 5/94 | 2.66 20.21} 1.81... 80 
Tripsacum dactlyloides (Gama Grass)... 2.52 3.69 37.84 13.08 1.64 1.07 29.06 | 6.30 ...-. 4.77 
Tricupis seslerioides (Tall Redtop) ...--. g5.582 145 02° 137.52} -1,09 | 2.32.) —. 53138. 494) Site ease eee 
CONCLUSION. 
The work which has been collected in the previous pages extended 
over several years, from 1878 to 1883. It was inaugurated by Dr. Peter 
Collier, as chemist to this Department, and the laboratory work for the 
first year was in the hands of Mr. Henry B. Parsons, Mr. Charles Wel- 
lington, and myself. The remainder of the work has been under my 
own supervision, and has been almost entirely carried out by Mr. Miles 
Fuller and myself. it is hoped that the collection and re-arrangement 
of the results will give them an increased value. 
