70 GRASSES OF IOWA. 



77.9; England Red, 77.4; No. 1 Club Bombay, 8-4.2; Baltic, Rus 

 sia, 56.6; Ghirka, Pine Russia, 49.3; Chili, South America, 77.9; 

 Ohio White Winter, 51.4; Wisconsin Spring, 47.4; Duluth Hard 

 Spring, 46.7; River Platte, South America, 46.1; California 

 Choice, 74.4; Manitoba Hard Spring, 48.9. 



Messrs. Schulte and Wright determined as follows concern- 

 ing the number of grains in a gramme: Corn: Giant White 

 Dent, 3.4; Hickory King, Wisconsin, 2.0; Common White field, 

 Iowa, 3.5; Eclipse, Wisconsin, 3.2; Iowa Gold Mine, 2.9; Hick- 

 ory King, Iowa, 2.1; Improved Leaming, Iowa, 2.9; White's 

 Mammoth Red, 2.9; Red Beauty popcorn, 8.3; Monarch Rice, 

 11.6; Hickory King, Alabama, 1.9; Alabama Yellow, 1.8; 

 Stowell's Evergreen, Iowa, 4.1. Wheat: Turkey Red, Iowa, 

 40; Red Clawson, Missouri, 23; Fultz, Missouri, 29; Wisconsin 

 Triumph, 39; Turkey Red, Kansas, 32; Currell, Kansas, 35. 

 Oats: Giant Yellow, Wisconsin. 27; Red Rust Proof, Kansas, 

 35; New Salt Lake, Iowa, 45; Black Mammoth Cluster, Mis- 

 souri, 39; White's Superior Scotch, Iowa, 33; Lincoln, Iowa, 40. 



In 1893 wheat, obtained from various sources, gave the fol- 

 lowing results: New York, La Crosse, Wis., Jones' Winter 

 Fife, 37.3; Wisconsin Triumph, 33.5; Iowa Turkey Red, 35.92; 

 New York, Red Clawson, 22.77; World's Fair, 26.92; Golden 

 Cross No. 2, 24.077; Bissell, Kansas, 28.77; McPherson, 33; 

 Turkey Red, Kansas, 33.77; Missogen, California, 18; Carter's 

 Hundredfold, 23.233; Fultz, North Carolina, 34.933; Early Red 

 Clawson, 31.28; Amber, 28.6. 



One hundred seeds of Michigan Amber weighed 3 5134 

 grammes. Purple straw, 6.864; English wheat, 3.7798; Sum- 

 mer wheat, Halle, 2.8654. 



Schertlen gives the following specific gravity of some grass 

 seeds: Muhlenbet-gia mexicana, 1.100; Arrhenantherum elatius, 

 with chaff; 0.600; Avena sativa, 1.345; A. orientalis, 1.021; Bromus 

 inermis, 0.746; Holcus lanatus, with chaff removed, 0.301; Hordeum 

 vulgare, with chaff, 1.351; Panicum )nUlaceum, 1.179; Zea mays, 

 L147. 



Dissemination. — An important step in the life of every plant 

 is the dissemination of its seed, since without this the species 

 has little chance to perpetuate itself. 



Grasses are disseminated by wiad, animals, hygroscopic 

 movements, water and man. 



Speaking of dissemination Hackel says: "In all wild 

 grasses certain parts of the spikelet or of the entire inflor- 



