206 Coast Survey Report for 1853. 
and its modifications by the variation of steepness in the off-shore 
bottom slope, are strongly marked. With these results, the names 
of Lieuts. Davis, George M. Bache, Richard Bache, S. P. Lee, 
Maffitt and Craven are conspicuously associated ; George M. Bache 
being distinguished as a martyr to his zeal, in the very glow of 
talent, hope and success. 
sand have to be searched for carefully under the microscope, to 
be noticed at all.” It will be seen that this result coincides with 
Mr. Pourtales well remarks on the importance of “a knowledge 
of the habitation and distribution of the Foraminiferse” to geolo- 
descriptive of the tidal movements are parts of the engraved 
matter required to go on each finished chart of the Coast Survey- 
In the regular prosecution of this work, there thus results a great 
accumulation of tidal observations which require reduction and 
discussion before the charts ean be completed. Also several 4 ea 
Mauient tide stations are established along the coast, to furnish by 
