Note 15 — APPENDIX.
Reading edition
American Journal of Science, November, 1872. The experiments of Dr. Draper are inconclusive, because they are made on seedlings, which, until their supply of organic food is exhausted, are independent of sunlight.
Reading edition
American Journal of Science, November, 1872. The experiments of Dr. Draper are inconclusive, because they are made on seedlings, which, until their supply of organic food is exhausted, are independent of sunlight.