TESTS 1475 



TABLE OF TESTS.— Continued. 



TESTS 



Use. 



Reagents. 



Reaction. 



Application. 



Remarks. 



rechsel's test. 



Biliary matter. 



(a) Syrupy phosphoric Red to reddish- Add to concent, liquid 

 acid, (b) Cane-sugar. brown color. a and b, and heat on 



a water-bath. 



rechsel's test. 



Xanthin-bodies. 



Copper chlorid. 



Mud-colored ppt., \ Add R. to ammoniacal 

 becoming white. | solution of sub- 

 1 stance. 



rewsen's test. 



Acetone in urine. 



See Bayer's test. 



adtey's test. 



Gallic acid. 



Sol. of ammon.picrate.j Reddish color, : Add R. 

 changing toj 

 green-. 



idley's test. 



Glucose. 



Bismuth nitrate, dis- ! Gray or black ppt. 

 solved in a little 

 nitric acid; add 

 equal bulk acetic 

 acid, and dilute to 10 

 vol. with water. 



Add to urine (rendered 

 strongly alkaline by j 

 sol. of sodium 

 hydrate) i or 2 drops ] 

 of R., and boil. 



iflos' test. 



Picrotoxin. 



Potass, bichromate. 



Green color. 



Add sol. R. 



-Blondlot's Phosphorus in 

 tissues. 



Alcohol, ether, and 

 carbon bisulphid, 

 containing % per 

 cent, sulphur in sol. 



Place copper phos- ; Treat substance with 

 phid in flask, R., allow to stand 24 



and proceed as 

 in Marsh's test 

 for arsenic. 



hours, decant, and 

 treat residue a 

 second and a third 

 time in same manner. 

 Mix the liquids, filter 

 into retort, and warm 

 mixture with por- 

 tions of metallic cop- 

 per, until latter 

 remains bright. Al- 

 low to stand 24 hours, 

 distil off carbon di- 

 sulphid mixture, col- 

 lect copper on filter, 

 wash with alcohol, 

 then with ether. 



. rthy-phosphates Earthy phosphates Any alkali, 

 in urine. 



White ppt. 



•i's test. 



' 



Xaphthalin. 



(a) Sol. calcium chlorid. 

 (*) Concent, hydro- 

 chloric acid, (c) 

 Ether, (d) 1 per 

 cent. aq. sol. resor- 

 cin. 



On addition of a Add 3 to 4 drops a and 

 and b lemon-yel- a few drops b. Ex- 



Xaphthalin. 



Ammonium or sodium 

 hydrate. 



low color ; d over- 

 laid with ethereal 

 extract bluish- 

 green ; cherry- 

 red on addition 



of HXO3. 



Fluorescence. 



tract with c, and 

 overlay d with the 

 extract, adding a 

 little ammonia. 



Reliable but com- 

 plicated. 



Add a few drops R. 

 to liquid. 



Delicate. 



Aromatic com- 

 pounds in urine 

 of typhoid-fever 

 patients. 



(a) Sulphanilic acid 5.0, 

 hydrochloric acid 50 

 c. o, distilled water 

 1 000.0. 



(*) Sodium nitrite 0.5, 

 distilled water 100. 



Orange-red ring ; 

 rose-red foam. 



Mix 40 c.c. of a and 

 1 c.c. of*; mix with 

 equal quantity of 

 urine ; allow am- 

 monia to flow down 

 the tube. Shake to 

 produce the foam 



Of considerable 

 diagnostic value; 

 obtained also in 

 carcinoma, septi- 

 cemia, and per- 

 haps other condi- 

 tions. 



Bilirubin. 



(a) Dil. acetic acid. 

 (*) Sulphanilic acid 

 1 gm., hydrochloric 

 acid 15 c.c, sodium 

 nitrite 0.1 gm. 



Dark color, becom- , Add equal vol. a, and 

 ing violet on ! drop by drop b. 

 addition of 

 glacial acetic or 

 other acid. 



Ammonia. 



(a\ Sol. amnion, 

 chlorid. (b) Sol. 

 potass, hydrate, (c) 

 Sol. mercuric 

 chlorid. 



To 100 c.c. of liquid add 

 1 drop each of a, of ■ 

 b, and of c. 



3 em an n and Copper, 

 ochazka's test. 



Hydrobromic acid. 



Rose-red to red- 

 dish-brown or 

 blackish color. 



To 1 drop liquid add 

 1 drop R. ; let evapo- 

 rate slowlv. 



Acidimetry ; alka- Eosin 1 gm. in 30 c.c. of Acids destroy fluo- 

 limetry. water. rescence ; alkalies 



restore it. 



Proteids in urine. ! Picric acid 10, citric Precipitate ; quan- 



j acid 20. Distilled tity indicated on 



water 1000. graduated tube. 



