194 J. Blake—Connection between Isomorphism, 
ical action, and after the name of st substance is the quan- 
tity required to be injected into the veins or arteries in order 
to arrest, in the course of a few eauaead the reactions between 
the different solids and fluids of the body spoon — life. 
These reactions are arrested in the same man i” 
substances contained in the same group; but in a ‘ierit aa 
groups. This is not the place to dwell on the physiological 
phenomena that have been observed. Details of many of my ex- 
periments will be found in the 8d, 4th, 5th and 7th volumes of 
the Journal of Anatomy and Physiolog ey. 
Note.—I have appended to each group a statement of ve more marked physio- 
logical reactions that characterize the substances it contai 
Grovp 1. 
Lithic ceniphate, 2°56 ) Impede pulmonary circulation. Kill by 
Sodic 1°30} their action on the lungs; do not 
Rubidium rnin 0°25 affect the irritability of the heart 
Thallic sulphate, 0°20 Bie mo 
affec system except Cs. 
Czxsium chloride, 0°55 ) Do not ‘pede taclcteers pose phi ex- 
Silver nitrate, 0-12 cept A 
Group 2. 
oe sulphate, 6°40 me not pend the pulmonary or systemic 
suly phate 2°24 irculatio 
si saint Aarogecr Ret tee 1-00 Bert a ant action on nervous sys- 
Nickel s 1:20 
ae aie 1°30 Arve ue action of the heart. Prevent 
opper sulp phate, 1:20 coagulation of the blood except 
a cilahats 1 
Cadmium sulphate, 
Group 3. 
te beryllium: : co. Beco pce 0°65 ) Impede the systemic and pulmonary 
rere alumina, 0°68 circulation. 
Yttria nitrate, 0°25 Heart not affected. 
Cerium chloride, 0:22 Blood coagulates firmly. 
Ferric sulphate, : 
Group 4. 
Calcium chloride, 3°28) No effect on aa or pulmonary 
Strontium nitrate, 2°64 | circulation except Pb. Ventricles of 
Barium chloride. 0°32 heart ot naahened. Domes of vol- 
untary muscles after di 
Lead acetate, ace O16 
Group 5. 
Palladium chloride, ._........--- 0°064 Act on the 
Platinum chloride,........-__.-- 07120 ) Render respiration intermitted. Impede 
—— chloride, 07120} systemi ation. chants the 
Ammonium Iridium chloride, .... 0°064 pbpucal properties of the b! 
Group 6. 
nek, | lane Te 
0°33 irculation. ge the oe 
rr the blood and cause convulsions. 
Ammonia nitrate, 3°00 ae the 
Kalium nitrate, 
