and Laboratory Methods. 



2725 



is determined by the Xessler's reagent. Tablets are provided for the determin- 

 ation of nitric acid and nitrates, lead, zinc, iron, and copper. The author gives 

 comparative tables of the results of the analysis of various samples of water by 

 this method, and by the elaborate quantitative chemical methods, and shows that 

 the method here described gives very satisfactory results. r. p. 



An Adjustable Anatomical Table. 



In the University of Pennsylvania Med- 

 ical Bulletin for June, 1903, Prof. G. G. 

 Davis describes a table which has proved very useful for human anatomical 



demonstrations. It consists of a frame supporting a top, which is capable of 

 being tilted, being hinged near the middle. The top is made of paraffined oak, 



