52 



The paper deals more especially with the character of the sugar present which 

 has already been described by two Mexican chemists as a distinct and new kind 

 of sugar. The results given in this paper go to show that this sugar is not 

 different in any way from that of the cane or the beet-root or the maple. That it 

 is a definite chemical compound known as sucrose and that without much doubt 

 the announcement of the Mexicans of the discovery of a new sugar was leased 

 upon erroneous observations. 



Camphoric Acid. By W. A. Noves, 



Action ok Potassium Sii.fhydrate Upon Ckrtaix Aromatic Chlorides. 

 Bv Walter .Tones and F. ('. Scheuch. 



A New Phosphate. By H. A. Huston. 



Dip ok the Keokuk Rocks at Bloomington, Indiana. By V,. M. Kindle. 



In the course of some stratigraphical studies in Monroe County it became de- 

 sirable to ascertain, as accurately as possible, the dip of the Keokuk strata. A* 

 is generally the case with Indiana rocks the Keokuk strata are not sufficiently 

 inclined to admit of the use of the clinometer in determining their dip. It wa* 

 therefore necessary to determine the relative elevations of two points lying in th& 

 direction of dip in some stratum, and separated by a known distance. It is 

 essential in this method of estimating dip that a stratum or horizon be selected. 

 which can be ])ositively identified at different points. 



The contact of the Keokuk with the Knobstone is readily recognized wher- 

 ever it outcrops in Monroe County, both by the striking jialeontological and lith- 

 ological differences between the two groups. The Keokuk is everywhere at the 

 contact with the Knobstone an impure fossiliferous limestone, while the Knob- 

 stone is a massive sandstone entirely without fossils. I therefore selected the con- 

 tact of the Keokuk with the KnoI)stone as the most convenient stratum, from 

 which to determine its dip. The ravines north of Bloomington afford numerous 

 exposures of the <'ontact. Two points for the comi)arison of elevations were 

 selected, one a mile and a half north of Bloomington on the North Pike, the 

 ftther in a ravine nearlv due east of the first. A surveyor's transit was used to«- 



