GRASSES OF IOWA. 69 



It is interesting to compare the specific gravity of wheat 

 with that of a few other seeds obtained in Europe. An 

 average sample of corn has a specific gravity of 1.147; Castor 

 Oil bean, .908; Buckwheat, 1.104; Field pea, 1.355; White 

 clover, 1.41; Kale, 1.35; Rutabaga, 1.38. 



Schulte and Wright in the botanical laboratory, Iowa State 

 College of Agriculture and Mechanic Arts, determined as 

 fo'lows concerning the weights and specific gravity of several 

 cereals. Corn: Giant White Dent, 1.2547; Hickory King, 

 1.2932; King of Earliest Dent, 1.3284; South Dakota Flint, 

 1.3367; Mastodon, 1.2712; Jumbo, 1.2352; Chester County Yel- 

 low, 1.2753; Common Yellow Field, Iowa grown. 1.2826; Com- 

 mon White Field, Iowa grown, 1.3627; Golden Cable, Missouri, 

 1 2821; Pride of the North, 1.2766; Iowa Gold Mine, 1.2836; 

 Longfellow Flint, 1.3044; Iowa Beauty, 1.2816; White's Mam- 

 moth Red, 1.2511; Monarch Rice popcorn, Iowa, 1 3550; Red 

 Beauty popc:rn, 1.3738; Hickory King, Alabama, 1.3088; Pride 

 of the Farm, 1 3306; A'abama Yellow, 1.2022; Hickory King, 

 Kansas, 1.2555; Improved Lgaming, Kansas, 1.2945. Wheat: 

 Turkey Red, Iowa, 1894, 1.3290; 1895, 1.3065; Fife, 1894, 1.4177; 

 Red Clawson. Missouri, 1894, 1.3594; O'Kangan Valley Velvet 

 Chaff, 1.5197; Wiscons'n Triumph, 1.4077; Turkey Red, Kan- 

 sas 1894, 1.3659; Turkey Red, Iowa, 1.4137. Oats: Nameless 

 Beauty, Wisconsin, 1.3432; Giant Yellow, Wisconsin, 1.3178; 

 White Bonanza, Wisconsin, 1.3290; Red Rust Proof, Kansas, 

 1.2550; Full Moon, Iowa, 1.2302; New Salt Lake, Iowa, 1. 

 Clover: Iowa, 1.2121; White Superior Scotch, 1 2334; Black 

 Mammo h Cluster, Wisconsin, 1.1257; Wide Awake, Wiscon- 

 sin, 1.1892. 



Mr. J. U. Loyd,* who has made an exhaustive s^udy of the 

 grain weight, records the following densities: Duluth Hard 

 Springs, 1.394; India, No. 1 Club Bombay, 1.385; Manitoba 

 Spring Ha-d, 1.388; Ohio White Winter, 1.387; Black Sea, 

 Azima, Russia, 1.383; Patagonia, South America, 1.380; Wis- 

 consin Spring, 1.377; Australia, 1.377; Ghirka, Fine Russia, 

 1.364; California No. 1, 1.358; River Plat e. South America, 

 1.357; England White, 1 346; New Zealand White, 1 346; Odessa, 

 Russia, 1.343; Chili, 1,332; England Red, 1,337: Washington 

 State, 1.327. 



According to the same investigator 100 grains of wheat of 

 the following varieties weigh as follows: New Zealand White, 



*The Qrain Weight: A study of wheat. Cincinnati. 16. 



