202 Mr. J. J. Griffin's Instructions for the 



bable that the degree and type of the fever induced by the 

 presence of pus in the blood may be found to depend on the 

 extent to which it may be contaminated. 



Of the inflammatory, hectic, and low typhoid fever, it seems 

 hardly necessary to observe, that they appear to be all com- 

 prehended under the common designation of constitutional 

 irritation in the interesting work of Mr. Travers, which I had 

 not read till my attention was directed to it by Mr. Liston 

 after this paper was written. Under the term typhoid, I have 

 included that grave form of fever in which the vital powers 

 sink rapidly, as I believe, from somewhat sudden and exten- 

 sive mixture of pus with the blood, as sometimes occurs after 

 operations on veins, or amputations, or even independently 

 of wounds. The patient seldom complains of much pain ; he 

 has, among other symptoms, dilated nostril, flushed face, en- 

 crusted tongue and teeth, restlessness, small quick pulse, 

 cold clammy sweats, offensive breath, hiccough, subsultus, 

 stupor. 



I cannot conclude this paper without expressing a hope 

 that it will lead to a still more careful and extensive examina- 

 tion of the blood in various diseases than has hitherto been 

 attempted. The microscope may become as important an 

 instrument to the pathologist, and even to the medical practi- 

 tioner, as the stethoscope. If my results should be confirmed, 

 it is hardly too much to expect that some important discovery, 

 particularly in diagnosis, may be made by a patient investi- 

 gation of the blood in many malignant diseases, such as 

 cancer : it is not long since the urinous fever, as it is called, 

 was found to depend on the accumulation of urea in the 

 blood. 



XXVI. Instructions for^the Qualitative Analysis of Soluble 

 Salts. By John Joseph Griffin, Author of " Chemical 

 Recreations."* 



[The salts are supposed to be in a state of purity, and each to contain one 

 of the twenty-seven metals, and one of the fourteen acids, that are 

 named in the tables.] 



ir^ISSOLVE the salt in water, and apply to separate small 

 -■-^ portions of the resulting solution contained in test tubes, 

 or in conical test glasses, a few drops of the test solutions that 

 are named at the head of each column in the tables, com- 

 mencing with those on the left hand. 



Pay no attention to the precipitates that are not mentioned 

 in the tables. 



* Communicated by the Author. 



