SCIENCE. 



The Laboratory Note-Book. 



For Students using any Chemistry. Board covers. Cloth back. 192 pages 

 Price by mail, 40 cents. Introduction price, 35 cents. 



IT contains blanks for experiments ; blank tables for the reactions of 

 the different metallic salts ; pages for miscellaneous matter ; and 

 an extra chart for the natural classification of the elements, similar to 

 that on page 221 of Shepard's Chemistry, which may be rolled into a 

 cylinder by the student. 



The advantages of using this note-book are, briefly, these : It 

 saves time for the student and gives the teacher control of his work ; 

 its size is convenient ; it is cheaper than an ordinary blank-book ; the 

 paper is such that it readily takes ink without blotting or smearing, 

 or it may be used with a lead pencil. 



The value of systematic note-taking by the the student in chemis- 

 try can hardly be over-estimated. 



Our Chemistry Circular contains fac-similes of three pages, pre- 

 pared by the students in the Ypsilanti high school for 1885-6, show- 

 ing how the book is to be used. 



Geo. F. Sawyer, Deft, of Chemistry, 

 Martha's Vineyard Summer School : It 

 is the best in plan I have seen. 



D. W. Batson, Pres. Ky. Wesleyan 

 Univ., Millersburg: It is answering our 

 purpose excellently. 



Chemical Problems : 



Adapted to High Schools and Colleges. By JOSEPH P. GRABFIELD and T. S. 

 BURNS, Instructors in General Chemistry in the Mass. Inst. of Technology. 

 Cloth. 96 pages. Price by mail, 55 cts. Introduction price, 50 cents. 



THIS book comprises the principles of stoichiometry, with separate 

 chapters upon atomic and molecular weight, determinations and 

 specific gravity of gases, and upon the principles of thermo-chemistry 

 and its application to inorganic chemistry. The authors have added, 

 as a set of general questions, a series of problems and reactions and 

 the examination papers in general chemistry given at the Institute 

 of Technology during the last ten years. The book contains no 

 formulae, students being led to solve the problems from the principles 

 involved. 



