1895.] MICROSCOPICAL JOURNAL 269 



duced into the solutions, and thus mar the result, aimed 

 at when employing the high magnifying glasses of the 

 microscope. Distilled water alone will not do, for even 

 then the little Bacillariacese will creep in and puzzle the 

 observer. A dozen Bacillariaceae do not weigh enough to 

 influence the balance but are enough to see, I have used 

 filters of various kinds, but paper filters are the most 

 convenient. To support them a funnel of glass or sim- 

 ilar hard material is used. To facilitate the flow a rib- 

 bed funnel has been tried, but this is inconvenient. The 

 flow of the water is too slow, and much of the filter is 

 lost, being left out on account of the adherence of the 

 funnel. A funnel was tried, but that did not answer, 

 being rusty and offering a small portion to the flow. At 

 last I did away with the funnel altogether. I now use 

 what I think is a decided advantage. A piece of cellu- 

 loid, such as is use for taking photographs on, and 

 which is made of collodion mixed with gum camplior, is 

 taken and bent around in the form of a funnel, and 

 placed in an iron retort stand ring. Into this the paper 

 filter can be placed. The celluloid is thin, and can have 

 holes punched in it all over so that it becomes a scive. 

 Most of the filter can thus be made use of, and when it is 

 not in use the celluloid strip can be washed clean andput 

 away flat like a sheet of paper. I hope this simple con- 

 trivance will be appreciated bv all if it is only tried. 



Diatoms of the Connecticut Shore.— VIll. 



Bv WM. A. TERRY, 

 BRISTOL, CONN. 



Continued from Page 41. 

 The small uaviculoid diatoms mentioned in No. 7 of 

 this series, may be found on the soft ooze uncovered by 

 the tide in almost every bay, cove or inlet of the Con- 

 necticut shore, especially in early summer : later in the 

 season the mud of sheltered ditches when laid bare by 



