1895.] MICHOSCOPICAL JOtfRNAL. 47 



shores ; but this year in September I found at Silver 

 Sands, Grinnellia americana, several peculiar types of 

 Dasya elegans, Lomentaria baileyana, Callithamnium 

 baileyi and corymbosum with several other varieties, 

 Polysiphonia violacea and olneyi and many others. 

 Large quantities of aged specimens were thrown up on 

 the beach ; some days I saw two men with horse and 

 cart at work for several hours piling them up above 

 high water. This pile contained abundant specimens 

 that had been beautiful when young, but now were faded 

 and black ; and so covered with growths of hydroids as 

 to give the whole pile a gray tint. Off the beach at 

 Morris Cove, Polysiphonia violacea and related varieties 

 were plentiful. West of New Haven Harbor at Hine's 

 Point and at Merwin's Point near the village of Wood- 

 mont, I found the red Ceramiums and Callithamniums 

 plentiful, and red Polysiphonia unusually abundant. 



I took samples of earth from four and five feet below 

 the surface of the marsh between Savin Rock and Wav- 

 erly Grrove and found them rich in varieties of diatoms 

 similar to those from Silver Sands, but containing an 

 even greater number of kinds of Cerataulus, Biddulphia, 

 and Auliscus. Similar samples from the marsh back of 

 Woodmont also showed an increased number of these 

 species, and soundings from the creek were rich in Navic- 

 ula permagna of the normal type, which is somewhat rare 

 here. The specimens so plentiful at Leete's Island are 

 a different variety of this species. I investigated more 

 or less closely about 25 miles of shore line, but as my 

 examination of samples is not yet completed I do not 

 give lists of species in this paper. 



Gallic and Tannic Acid Tests. — To a solution of tannic 

 acid, add solution of chloride of barium and a piak precipitate 

 will result, gradually darkening. To a solution of gallic acid, 

 add a solution of potash and of chloride of barium and a blue 

 precipitate will result. — Fred'k Davis. 



