102 NATUllAL SCIENCE. 



Chemical Experiments. 



General and Analytical. By R. P. Williams, Instructor in Chemistry, 

 English High School, Boston. 8vo. Boards, xv + 212 pages. Fully 

 illustrated. Mailing price, 60 cents ; for introduction, 50 cents. 



T^HIS book is for tlie use of students in the chemical laboratory. 

 It contains more than one hundred sets of the choicest illus- 

 trative experiments, about half of which belong to General Chem- 

 istry, the rest to Metal and Acid Analysis. 



Great care has been taken to describe accurately and minutely 

 the methods of performing experiments, and in directing pupils to 

 observe phenomena and to explain what is seen. The work is 

 amply illustrated and is replete with questions and suggestions. 

 Blank pages are inserted for pupils to make a record of their work, 

 for which careful directions are given, with a model, laboratory 

 rules, tables of solubilities, etc. 



A new feature is the supplementary and original work, which is 

 given at the end of each set of experiments for such pupils as com- 

 plete the prescribed work ahead of others in the class, and a list 

 of terms to be looked up in some text-book. This gives an elas- 

 ticity to the book and fits it for use in schools where much time 

 is devoted to chemistry, as well as in the most elementary classes 

 in laboratory work. 



Another original feature which it is believed will be heartily 

 welcomed by teachers is the method of treating Metal Analysis 

 successfully used by the author for several yeai'S. 



Briefly, the aim of this book is to aid the pupil to do, to observe, 

 to explain, to record, and thus to learn the essentials of chemistry. 



Laboratory l\/lanual of General C/iemistry. 



By E. P. Williams, Instructor in Chemistry, English High School, 

 Boston. 12mo. Boards, xvi + 200 pages. By mail, 30 cents ; for intro- 

 duction, 25 cents. 



T^HE book contains one hundred experiments in general chem- 

 istry and qualitative analysis, blanks opposite each for pupils 

 to take notes, laboratory rules, complete tables of symbols, with 

 chemical and common names, reagents, solutions, chemicals, and 

 apparatus, and the plan of a model laboratory. 



