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give rise to vaso-dilatation. Atropine, however, producing also vaso-constriction (in small doses at least), it would perhaps further, follow that the remaining portion of the molecule should give rise to vaso-constriction.
 
In these experiments on the bloodvessels with sodium tropate and tropine-hydrochlorate an improved method was used. Instead of an artificial heart and lung to arterialize and pump the blood through the bloodvessels, as had been used in the latest researches of this kind by Drs. von Frey and Gruter, a natural heart and lung were interposed between the blood-reservoirs and the blood-vessels. Hence this method is far from all those objections which still cling to the old method and, consequently, the results ought to be reliable. 

After making a number of experi-