Ad99999 06 090a/eng
Der Brandpilz des Waizens
Beschreibungstext eng
Misc. Subjects CXXVI. Vol. VI. No. 88., THE BLAST OF WHEAT., The blast of corn, which frequently impairs the produces of harvest, is a sickness of the corn-plants, which is not discernible untili the ears begin to bud. Wheat is most frequently attacked by this sickness of blast, that consists in the grains not being duely ripe, whence instead of containing a white and mealy substance, they are filled up with blackish grains consisting of dust and stinking in their fresh state, whereby at length the whole car is soiled, when the blighted wheat-grains buTst and the blasting fies out. P. I is a blasted wheat grain in its natural greatness. Fig.. 2. and 3. considerably magnified, b b b in both Fig. ures there are the tops steiilized by sickness, a a. Fig.. 2. the pistils deformed by sickness. 'Fig.. 3: shews the interior of a blasted wheat-grain. Fig.. 4. exhibits a number of magnified grains of the blasting. Every grain is composed of several other lumps accumulated together, which we discern through the microscope on moistening the blast. Fig.. 6. shews the form of single grains of the sound and immature wheat-flour, when it is wettish. The blasting of wheat is but a particular kind of mushrooms consisting of dust and belonging to the genus blast, comprehending many species. To the same genus is likewise ascribed the pretended rust of corn. In Fig.. 5. we behold the form of the grains of the rust of bailey greatly magnified.
