THE NEW YORK JOURNAL OF PHARMACY 



Thomas Zimmerman, '13, is with A. J, 

 Bauer, 114th St. and Broadway. "He's 

 some ladies' man, take it from me." — 

 M. O'C. 



O. M. Giick, '16, is touring New York 

 and Pennsylvania. 



"Little Bill" McBride, '16, is increas- 

 ing under the balmy influence of King- 

 ston, N. Y. Poor boy, he needs it ! 



P. Pretzel!, '15, is getting over a light 

 attack of pneumonia. 



Mr. L. Williams, '14, is still with Mr. 

 Chas. Pope of 112th St. and Broadway 



Duncan Rose is again a happy addi- 

 tion to John Roemer's force in the Favor- 

 ite Corner Drug Store at White Plains. 



J. Paulonis, '16, and J. Sesta, '16, re- 

 cently took a trip to Poughkeepsie and 

 passed through Vassar College, accord- 

 ing to the cards we received. 



J. Cohen, '16, spent an enjoyable vaca- 

 tion at Hurleyville, N. Y. 



J. E. Davis, '16, dropped us a line from 

 Smith^own, L. I. 



N. Moskowitz, '14, owns an elegant 

 pharmacy at Bedford Ave. cor. 2nd St., 

 Brooklyn, and has in his employ A 

 Rosenfeld, '14. 



notice:. 



Drug stores (snaps) for sale in all states and 

 positions all states. Physicians, Veterinarians, 

 Dentists, Nurses, located and furnished. 

 F. V. KNIEST, R. P. Omaha, Nebr. 

 Established 1904. 



DROP WEIGHTS.* 



Curt P. Wimmer, Phar. D. and Leo 

 RooN, Ph. C. 



It is a fact well known to physicians 

 and pharmacists alike that the method of 

 prescribing liquid medicines in the form 

 of drops is not an accurate one. The 

 only valid excuse for the use of the drop 

 is the convenience of measuring, or 

 better, dropping. As a unit of measure, 

 a drop is decidedly unsatisfactory. 

 Nevertheless we know that a large num- 

 ber of medicines are invariably dispensed 

 or ordered to be taken by the drop. 



The size and weight of drops varies 

 considerably and depends upon many 

 factors, such as the consistency of the 

 liquid, specific gravity, cohesion, tempera- 

 ture, etc. 



As soon as we use a certain standard 

 drop as a primary unit and standardize 

 all others accordingly we couple conven- 

 ience with accuracy. The International 

 Conference at Brussels in 1902 adopted a 

 dropper which was constructed so as to 

 deliver 20 drops of distilled water at 15° 

 C. to weigh exactly one gram. The outer 

 diameter of the delivery tube was to be 

 exactly three millimeters. 



A number of so-called normal drop- 

 pers are on the market, for example the 

 Eschbaum Normal Dropper, the Lamp- 

 recht Patent Dropping Flask, the Viginta 

 Drop Glass of Steinbuch, and others. All 

 of these are constructed to conform with 

 the requirements of the Brussels Confer- 

 ence. Having occasion to determine the 

 weight of a certain number of drops of a 

 liquid, it occurred to the authors that a 

 burette might readily be constructed and 



*From Journal, A. Ph. A. 



