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Show Kdllilr i:rl.. Much has been written about the eurtii-e:.Lii',' iKot oi various conn i rirs. but it is not g iieiM.ly umm u that the inhabitants of lVnacova. a viiia.e in l'ortugul. have for c-oncruliotis cau-u a variety oi earth (Yuniii in t .o m i-iibor. hood. It i said tual any of ihem leaving h.nne is afflicted with u singular singu-lar malady with gastric symptoms unless un-less provided with a supply of the earth. The reason of this is probably the presence of arsenic in the eai t.i whieh is known to produce the.-e singular sin-gular effects upon its habitual consumers. con-sumers. The fact that Dr. Voel ha-, found none in it by cursory examination, examina-tion, but, on the contrary, has detected de-tected that it contains about double the quantity of uitrogeu found in similar 6oils from the adjacent fields, lends plausibility to the view that the active substance may be tin .alkaioid. The whole question could be easily settled by a competent chemist, and it is in bo hoped that some one will undertake its investigation. |