62 ROYAL SOCIETY OF CANADA 
sessed many flowers. Nodules were present on the roots of all the plants, 
but much more numerous on those from inoculated seed than those from 
the soil inoculated and untreated plants. 
Tables IV. and V. present the data of the pot experiments similar 
in character to those previously furnished for clover. 
Judging from the weights of crop and nitrogen contained, the above 
results afford strong evidence of the activity of Nitragin in promoting 
general growth and the assimilation of nitrogen. A comparison of the 
figures shows marked increases both in the soil and seed inoculated plants 
over the amounts found in the check pots. Here, asin the case of clover, 
of the two plans of treatment, that of seed inoculation gave the better 
results. 
Again, a study of the data of Table V. shows, as was found with 
clover, that no great differences in the composition of the peas are to be 
traced to the use of Nitragin—the benefit arising from increased growth. 
Though sterilized soil was not used in the investigation, we are of the 
opinion that none of the resultslend support to the theory that plants in- 
oculated with Nitragin are richer in nitrogen than those not so treated. 
Our work throughout points to “the larger amount of nitrogen in the 
treated being due to a greater development of root or foliage, or both, 
under the stimulating effect of the micro-organisms furnished by the 
preparation.” The roots contained in all instances practically one-fourth 
of the total nitrogen present. 
Plot Experiment with Peas.—Seed and “ culture,’ as in the case of 
pot experiments. Plots sown June 13th, samples collected August 9th. 
The previous treatment of the land as regards the application of fertilizers 
has already been stated. The results are as follows: 
From Untreated From Inoculated 
Plot Seed 
Weight of plants, including roots, green......... . 8178 6 grams 921°4 grams 
i es de Bir Gnried 00 DAD EO oc 26202) Mee 
Again we are furnished with strong evidence as to the effect of Nitra- 
gin, leaving but little doubt of its power in promotiug growth in soils 
practically destitute of nitrogen in the presence of mineral plant food. 
Horst BEANS. 
The plot experiments with Horse beans (culture, Vicia faba) cover 
two seasons, 1897 and 1898; the trial on plots, one season only, 1898. 
Tables VI. and VII. contain the data of the former. 
In 1897, with regard to the results, it is to be observed that the largest 
yield of crop was obtained from the “ soil-inoculated ” plants; the “seed 
inoculated ” plants furnished weights intermediate between the untreated 
