1HE ALUMNI JOURNAL, 



the gastrointestinal canal, we are indeed 

 sadly wanting. 



A glance back into the physiology of 

 these changes should make this readily 

 comprehensible. 



Indigestion is a grave affliction. It is 

 absolutely incompatable with amiability. 



Do not understand me to say that it is 

 not amenable to treatment. On the con- 

 trary, care and attention to detail is 

 often productive of very gratifying re- 

 sults. 



This procedure does not belong to this 

 lecture. I am to-night only concerned 

 in the description of the physiology of 

 the digestive apparatus and its pharma- 

 ceutical aids. From the standpoint of 

 the physiologist, agents that of them- 

 selves produce digestive changes in food 

 are of little service. 



COLUMBIA COLLEGE LECTURES 



IN CO OPERATION WITH THE AMERICAN MUSEUM 

 OF NATURAL HISTORY, 1894 95. 



SYRUP HYDRIODIC ACID. 



F. G. HILLS, Ph G. 



The decomposition which often takes 

 place in syrup of hydriodic acid suggest- 

 ed to the writer the use of glycerin instead 

 of sugar as a preservative. A sample of 

 4 per cent, strength was prepared accord- 

 ing to the U. S. P. method, the solution 

 of potassium iodide, potassium hypophos- 

 phite and tartaric acid being made of 

 corresponding greater strength, and gly- 

 cerin used instead of syrup. 



This sample is now over a year old but 

 shows no sign of decomposition, although 

 it has been exposed to both light and 

 moderate heat. 



Recently a sample of 5 per cent, strength 

 was prepared according to the following 

 formula, proceeding the same as in the 

 U.S. P. formula for the syrup : 



Potassii iodicL- gr. lxxvii 



" hypophos gr. ii 



Acid, tartaric - gr. lxxvi 



Aquae f Siss 



Dilute alcobol___ -- --f 3ii 



Glycerini .__ -q. s. ad. 3ii 



This has been exposed to sunlight and 

 air for about a month, but is in perfect 

 condition. If a preparation of this kind 

 proves more stable than the syrup, it 

 could be used for the preparation of the 

 syrup to advantage. 



To be given at the Museum . Central Park {Seventy-seventh 



Street and Eighth A venue), on Saturday Evenings 



at 8 o'clock. 



Sound. 



REGINALD GORDON, A. B., 

 Tutor in Physics, Columbia College. 



Dec. 1 st. -Production and Transmission of Sound 

 Waves. Velocity of Sound in different Media. 



Dec. 8. — Characteristics of Strings and Pipes. 

 Interference. 



WILLIAM HALLOCK, Ph.D., 

 Adjunct Professor of Physics, Columbia College. 



Dec. 15th. — Overtones, Musical Scale. The 

 Voice. 



Dec. 22d. — Resonance, Analysis of Sound. Ar- 

 ticulation. 



Dec. 29th. — The Ear. Acoustics of the Phono- 

 graph and Telephone. 



History of Chemistry. 



H. CARRINGTON BOLTON, Ph.D.. 



Non-resident Lecturer on the History of Chemistry, at 



Columbian University, Washington, DC. 



Jan. 5th. — The Follv and Wisdom of Alchemy. 

 Jan. 12th. — Paraclesus and the Iatro-Chemists. 

 Jan. 19th. — The Development of Pneumatic 



Chemistry. 

 Jan. 26th. — Lavoisier and the Reformation of 



Chemistry. 



The Vegetable World in its Economic Aspects. 



H. H. RUSBV, M. D., 

 Professor of Botany, College of Pharmacy. 

 Feb. 2d.— Food Plants. 

 Feb. 9th. — Medicinal Plants. 

 Feb. 16th — Plants of use in the Mechanical Arts. 

 Feb. 23d — Decorative Plants. 



Bacteria and their Relation to Health and Disease. 



T. M. CHEESMAN, M. D.. 



Instructor in Bacteriology, Columbia College. (College 



of Physicians and Surgeons). 



{What they are. 

 What they do. 

 How they are studied. 

 Mar. 9th, — Bacteria in Nature. 

 Mar. 16th. — Bacteria in Men and Auimals. How 



thev produce Disease. 

 Mar. 23. — Bacteria and Sanitation. How Bac- 

 terial Diseases are Prevented. 

 The lectures will be illustrated. 

 Tickets of admission are required. They can 

 be procured, without charge, by application to 

 the Secretary of the President, Columbia Col- 

 lege. 



