The tremendously complex nature of the chemical reactions which take place in the lead-acid storage battery also renders it an easy prey to many troublesome diseases.
She took particular pains to give Undine her due part in the performance; but the girl's expansive impulses were always balanced by odd reactions of mistrust, and to-night the latter prevailed.
Its conception embraced nothing but electrons, protons and molecules, and still was struggling desperately for some shred of evidence that thoughts, will power and consciousness of self were nothing but chemical reactions.
Thus chemical reactions are greatly quickened; minerals are dissolved and redeposited in new positions, or their chemical constituents may recombine in new minerals, entirely changing the nature of the rock, as when, for example, feldspar recrystallizes as quartz and mica.
The other is like a man who has planned an outing for the next day which continuing rain will frustrate. He cannot, to be sure, by his present reactions affect to-morrow's weather, but he may take some steps which will influence future happenings, if only to postpone the proposed picnic.