92 PROCEEDINGS OF THE AMERICAN ACADEMY 



Metamorphic Rocks. [Extr. from the Geolog. Mag., Vol. IV. No. 

 2, February, and No. 5, May, 1867.] 2 pamph. 8vo. 

 Francis (James B., Civil Engineer, etc.). 



Lowell Hydraulic Experiments. Being a Selection from Experi- 

 ments on Hydraulic Motors, on the Flow of Water over Weirs, in 

 open Canals of uniform rectangular Section, and through submerged 

 Orifices and diverging Tubes, made at Lowell, Massachusetts. 

 Second Edition, revised and enlarged, with many new Experiments, 

 and illustrated with 23 Copper-Plate Engravings. 4to. New York. 

 1868. 

 Frauenfeld ( George Hitter von). 



Zoologische Miscellen. IV., V., VI. 3 pamph. 8vo. Wien. 

 Gajjield (Thomas). 



Action of Sunlight on Glass. [From Am. Jour, of Sc. and Arts. 

 September and November, 1867.] 8vo pamph. New Haven. 

 Garratt (Alfred C, M. D., etc.). 



Medical Electricity, embracing Electro-Physiology and Electricity 

 as a Therapeutic, with special reference to Practical Medicine : 

 showing the most approved Apparatus, Methods, and Rules for the 

 Medical Uses of Electricity in the Treatment of Nervous Diseases. 

 3d ed., revised and illustrated. 8vo. Philadelphia. 1866. 

 Gibbs ( Wolcott, M. D., Rumford Prof, in Harvard University). 



On Certain Points in the Theory of Atomicities. [From Am. 

 Jour, of Sc. and Arts. Vol. XLIV. November, 1867.] 8vo. New 

 Haven. 



Contributions to Chemistry, from the Laboratory of the Law- 

 rence Scientific School. No. 3. 1. On a new General Method of 

 Volumetric Analysis. [From Am. Jour, of Sc. and Arts. Vol. 

 XLIV. September, 1867.] 8vo. New Haven. 

 Goppelsroder (Br Friedrich). 



Ueber die Chemische Beschaffenheit von Basel's Grund-Bach- 

 Fluss-und Quell- Wasser, mit besonderer Berucksichtigung der Sani- 

 tarischen Frage (als erster Theil). Separat-Abdruck aus den Ver- 

 handlungen der Baslerischen Naturforschenden Gesellschaft. Mit 

 Neun Tabelben. 8vo. Basel. 1867. 



Beitrag zur Priifung der Kuhmilch. Mit besonderer Beriichsich- 

 tigung der Milchpolizei. 8vo pamph. Basel. 1866. 

 Gould (Benjamin Apthorp). 



Reduction of the Observations of Fixed Stars, made by Joseph 



