180 THE AMERICAN MONTHLY [Oct. 



strange residence of the common Rotifer, namely, within 

 the leaf cells of the common bog moss or Sphagnum. — 

 ( Wood, Animal Creation.) The writer has already men- 

 tioned the discovery of Rotifer vulgaris in the under 

 lobes of the livermoss, Frullnaia. The plant had been 

 in a cabinet for at least two years when upon moistening 

 the leaf on a slide lively rotifers were seen living in the 

 under lobe. Sometimes two rotifers were found in com- 

 pany in one lobe. 



Myriangium DURiiEi. — This microscopic plant is de- 

 scribed on page 261 of Tuckerman's Synopsis of North 

 American Lichens as a member of the order Lichenes, 

 and on page 620 of Ellis & Everhart's North American 

 Pyrenomycetes it is described as one of the latter plants. 

 The last mentioned authors state that "its true place in 

 the mycological system is doubtful." Here is an oppor- 

 tunity for an ambitious microscopist or botanist to dis- 

 tinguish himself. A supply of plants may be obtained 

 from almost any one who possesses a collection of lichens. 



EDITORIAL. 



Slides. — The following new preparations have been 

 made and are for sale by J. D. King, Edgar- 

 town, Mass. 

 445. Evening Primrose. Anther and pollen. 

 42. Chalcobrichite. 



61. Cuprite with native copper crystals, 

 131. Gold from Denver, Colo. 



HYDROIDS AND POLYZOA. 



78. Udendrium tenue. Two slides of different growth. 



2. Campanularia volubilis on Porphyra crona. 

 60. Porphyra crona. Edgartown. 

 109. Bugula turrita with diatoms, — expanded tentales. 

 19. Bugula flabelata. 



SECTIONS. 



34. Root of high blackberry. 



