86 COMMERCIAL FEEDING STUFFS. 



PLATE VI. 



FIG. 1. Slime cells from seed of Plantago aristata Michx. X75. 



2. Endosperm cells of seed of P. aristata Michx. (The slime cells are out of focus 



and appear as hazy areas.) X150. 



3. Epidermal layer from P. major L. X150. 



4. Epidermal layer of P. rugelii Decaisne. X150. 



5. Surface view of epidermal layer of seed coat of smartweed (Polygonum persi- 



caria L.). X150. 



6. Surface view of seed coat of curled dock (Rumex crispus L.). X150. 



