474 



Richards: The Effect of Chemical Irritation 



Table II. 



VII. PenidUium glaucum. ZnSO^ added. Grown at room temperature, Har 

 vested nine days after sowing. loo cc. culture fluid in flasks 200 cc. capacity. 



% ZnSO^. 

 Fraction normal ZnSO^. 





Control. 



VII. 



Weight crop mg, 

 •Sugar left mg. 

 Sugar used mg, 

 Econ, 1 Fungus : sugar. 



Coeflf. ) Sugar : fungus. 



VIII as in VII. 



Temp, circa 20°C. 

 AVcight crop mg. 

 Sugar residue mg. 

 Sugar used mg. 

 Econ 1 Fungus : sugar. 

 Coeff, J Sugar : fungus. 



9 days 



IX as in Vll. 



Temp, circa 2o°C. 

 Weight crop mg. 

 Sugar residue mg. 

 Sugar used mg. 

 Econ. 'l Fungus : sugar. 

 Coeff. J Sugar : fungus. 



8 days 



X as in VII. 



Temp, circa 2o°C. 

 Weight crop mg. 

 Sugar left mg. 



Sugar used mg. 



Fcon. 1 Fungus : sugar. 



■Coeff, J Sugar : fungus. 



8 days 



50 cc. 



XI Conditions as in VII. 

 Tric/iot/iedum roscum, I lar- 



vested 10 days after sowing. 

 Temp, circa 22°C. 

 Weight crop mg. 

 Sugar residue mg. 

 Sugar used mg. 

 Econ, \ Fungus : sugar. 

 Coeff. J vSugar : fungus. 



430 



4093 



997 

 2.11 



0.46 



395 

 4048 



952 



2.41 

 0.41 



295 

 4426 



574 

 1-95 

 0.51 



362 

 4184 



816 

 2.26 



0.43 



112 



22JI 

 269 

 2.40 



0,41 



XII as in XI. 

 Trichothciiuui roseu/n. 

 Temp, circa 22°C. 

 Weight crop mg. 

 Sugar residue mg. 

 Sugar used mg. 

 Econ. \ I'ungus : sugar. 

 Coeff. i Sugar : fungus. 



95 



229S 



202 



2.13 

 0.48 



002% 

 000125 



.004% 

 .00025 



613 

 3809 



1191 



1.96 

 0.51 



.008% 

 .0005 



940 



3130 

 1870 



1.99 

 0.50 



705 



3393 

 1607 



2 28 

 0.44 



836 

 3480 

 1520 

 1. 81 



0.55 



693 



3409 

 1591 



2.31 

 0.44 



416 



4322 

 678 



1.70 

 0.59 



674 



3403 

 1597 

 2.37 

 0.44 



700 



3710 

 1290 



1.85 

 0.54 



683 



3873 

 1127 



1.65 

 0.61 



618 



3937 

 1063 



1.72 

 0.58 



910 



3453 



1547 

 1.70 



0.59 



6S5 



3550 



1450 

 2.12 



0.47 



Trichofhcciu777 roseurn. 



203 

 2052 



44S 

 2,21 



0.45 



205 



209S 



402 



1.99 



051 



203 

 2064 



436 



2.15 



0.48 



183 

 2152 



348 

 1.90 



0.53 



196 

 2013 



447 

 2.28 



0.44 



194 



2126 



374 



1.95 

 0.52 



.03270 

 .0020 



503 



3500 

 1500 



2.30 

 0.46 



581 



3559 

 1441 

 2.48 



0.41 



525 



3793 

 1207 



2.30 

 0.44 



OQI 



2278 

 222 



2.44 

 0.41 



TO4 

 2281 



219 



2. 1 1 



0.46 



