548 MR. J. I!. LA.WBS, DB, SU2BBT, AND DB. PTOH OB 



C. — Abstract of the Records of Growth op the Plants. 



I. — Plants grown in 1857*. 



The following list indicates tho original arrangement of the experiment* in 1857; 

 but, as the records will show, beans sown and resown under shades Xos. 5, 10, and 11 

 died before they had attained any material amount of growth; and hence the products 

 in these cases were not submitted to analysis. 



Series 1. With no other combined nitrogen than that contained in the seed: — 



1. Wheat; in prepared soil. 



2. Barley; in prepared soil. 



3. Barley; in prepared pumice. 



4. Beans ; in prepared soil. 



5. Beans ; in prepared pumice. 



Series 2. With a supply of known quantities of combined nitrogen beyond that con- 

 tained in the seed : — 



6. Wheat ; in prepared soil. 



7. Wheat ; in prepared pumice. 



8. Barley ; in prepared soil. 



9. Barley; in prepared pumice. 



10. Beans ; in prepared soil. 



11. Beans; in prepared pumice. 



And also — 



12. Wheat, Barley, and Beans, together ; in rich garden soil. 



Records of Sowing, and Early Stages of Growth, of all the Plants collectively. 



May 12.— The weighed seeds of wheat (Nos. 1, 6, & 7), of barley (Xos. 2, 3, 8, & 9), 

 and of beans (Nos. 4, 5, 10, & 11) were respectively put into small bottles, a few 

 septems of pure distilled water added to soak them, and then corked up. 



May 16.— The wheats (Nos. 1, 6, & 7), and the beans (Nos. 4, 5, 10, & 11), were 

 sown, and the pots removed to their places on the stand, and covered with the shades ; 

 seeds all swelled ; some sprouting. 



May 20. — The barleys (Nos. 2, 3, 8, & 9), freshly weighed seeds (the soaked ones 

 being abandoned), were set, and the pots removed to their position under the shades. 



May 27. — Nearly all show shoots above the surface, all of which look green and 

 healthy. 



June 2. — Wheat and barley plants two or three leaves each, healthy, but pale green. 

 No. 4 beans (soil) healthy and vigorous. No. 5 beans (pumice) one plant up, with 

 three leaves speckled with black spots ; the other plant blackened and apparently dead. 

 Beans No. 10 (soil) and No. 11 (pumice) slightly speckled with black spots. 



June 3. — Commenced the daily passage of washed air over the plants, in quantity 



* The figures (Plate XV.) of the plants grown in 1S57 are reduced from drawings taken, for the most 

 part, about the middle of August. 



