308 



Bibliography 



grown. It is also evident, that our knowledge of the chemical history 

 of this grain, is greatly extended by Mr. Salisbury's labors. We prom- 

 ise ourselves the pleasure of again reverting to this memoir on an- 

 other occasion, when we can have space to take it up somewhat in 

 detail. We must now confine ourselves to the following table (Table 

 60 of the memoir) exhibiting the composition of the ash of the kernels 

 of three varieties of maize. 



No. 11. 



Ash of kernels Ash of keme]s 



of the Chinese of the Tu«ca- 



tree variety. rora variety. 



Carbonic acid, 



Silicic acid, ' 



Sulphuric acid, 



Phosphoric acid and peroxyd of iron, 

 Lime, 



Magnesia, 



Potash, 



Soda, 



Chlorine, 



Organic acids, 



trace. 



1-700 



1-075 



49185 



0620 



16200 



12930 



15365 



0-440 



2125 



99640 



trace. 



0-775 



1-275 



44-135 



0-395 



12*875 



14-240 



20545 



0-450 



3-520 



98-210 



I No. 15. 

 Ash of kernels 

 of the R. .Island 

 sweet variety. 



trace. 



1125 



0550 

 44050 



0335 

 12-810 

 12867 

 22968 



0-270 



3-025 



98000 



14. Notes on the Medical Application of Electricity ; by William 

 F. Changing, M.D. Boston : D. Davis, Jr. and J. M. Wiohtman. 1849. 

 12mo, pp. 199. — This unpretending little volume emanates from a 

 source which entitles it to great confidence as a faithful record of the 

 present state of our knowledge of the application of electricity in the 

 treatment of human disease. The subject is treated under the follow- 

 ing heads. I. Physiological relations of Electricity. 2. Forms of Med- 

 ical Electricity. 3. Means of Application. 4. General application to 

 disease. 5. Special application to disease. Dr. Channing treats each 

 of these topics in a perspicuous manner, and the last two with special 

 fullness. He gives a decided preference in a majority of cases, to 

 electro-magnetism and magneto-electricity as a means of excitement 

 in medical cases. 



15. Davis's Manual of Magnetism; by Daniel Davis, Jr. 1848. 

 Boston: 2d edition. 12mo, with 180 original illustrations. — Mr. Davis's 

 Manual has long been a handbook with all teachers and many students 

 of electrical science in this country. It is peculiarly an original and 

 valuable work, and the forms of apparatus which it figures and de- 

 scribes, are now acknowledged to be the best which are in use for ex- 

 perimental illustration. Many minds have united to produce this result, 

 and Mr. Davis has been peculiarly favored in having the advice and as- 

 sistance in contriving his apparatus, of such men as Prof. Henry and 

 Drs. Page, Channing and Bacon. Under the charge of the two latter 

 gentlemen, the present (as well as the former) edition of this Manual 



has been principally prepared. 



16. Knapp's Chemical Technology, vol. ii, illustrated with 246 engra- 

 vings. Philadelphia: Lea & Blanchard. 1849.— The second volume of 

 this work under the editorship of Prof. W. R. Johnson, has been some 

 time in our hands from the enterprising publishers. The mechanical 





