III. MEASUREMENT. 939 



The principal use of the third (Fig. 3) is to determine the profile of the 

 face. 



For further particulars, see the monograph " Le Kephalograph," by Pro 

 fessor Harting. 



3723. Balance for Physiological and Clinical Pur- 

 poses, on polished oak. 



The Brandenburg Balance Manufactory , Messrs. Kuhtz 

 fy Co., Brandenburg on the Navel. 



These balances and weights are being extensively used in all scientific 

 schools, and especially by practising physicians. They are available and 

 almost indispensable for the investigation of the disturbances of nutrition in 

 childhood ; for the estimation of the. loss or gain of weight by the body during 

 the course of lung disease, diabetes mellitus, acute diseases, &c. ; .for the study 

 of the normal growth of the body ; and for pathological and anatomical 

 investigations in which weighings are required. 



The balance carries 150 kilogrammes and turns with 0*25 grm. By means 

 of the pointer attached to the beam and the ivory scale, a still smaller difference 

 in weight can be detected. 



3724. Set of Iron and Brass Weights, accurately ad- 

 justed. 



The Brandenburg Balance Manufactory, Messrs. Kuhtz 

 Sf Co., Brandenburg on the Havel. 



2549. Drawings (.4) of two apparatus for testing the Products 

 of the Perspiration of Animals ; the larger of this apparatus is 

 destined for horses, cattle, swine, and sheep, &c. ; the smaller serve's 

 for the same researches on poultry and rabbits, &c. 



Prof. Dr. Ignaz Moser, Vienna. 



3732. Manometer, with movable level of the mercury. 



Physiological Institution, Prague. 



The above is a quicksilver manometer, the legs of which communicate with 

 a vessel containing mercury ; the bottom can be lowered or raised by means of 

 a screw. The manometer allows, among other things, a very quick measure- 

 ment of the pressure of the saliva, during secretion. 



3740. Dynamometer for Paracentesis Thoracis, by Dr. 



Douglas Powell. T. Hawksley. 



3741. Dr. Douglas Powell's Instrument for measuring 

 Thoracic Resilience. T. Hawksley. 



3741a. Instrument for the Identification of Persons. 



Joseph Bonomi. 



The normal proportion of the human frame is that the measure of the dis- 

 tance from the extremity of one hand jto th.e extremity of the other when the 

 arms are extended should be the same as that from the top of the head to the 

 sole of the foot, and any departure from this normal proportion furnishes 

 a* means of individual identification. 



The purpose of the instrument is to obtain these two measurements simul- 

 aneously. 



