Fig. 37. Types of seed-drills and planters, 

 a. Model or Iron Age; 6, Planet Jr. hill and drill seeder; c. Planet Jr. drill 

 seeder; d, Planet Jr. fertilizer drill, and pea and bean seeder; e, Billings; 

 f, one-row corn-planter; g, Henderson corn and fertilizer drill; A, Spangler 

 corn-planter, with fertilizer attachment: ?, Trne's potato-planter; j, Gem. 



