1893.] MrCKOSCOPICAL JOUENAL. U9 



San Francisco, Cal. — W. E. Lov, Sec'y. 



March /, iSgj. — Three new members elected. The donations 

 to the cabinet were numerous, and included stained and unstained 

 slides of the alga J'olvox globator, h'om L. M. King; from A. 

 H. Breckenfeld a slide of crystallized gold, the abrasions from a 

 quantity of coin shipped from Australia ; from Dr. A. M. Ed- 

 wards, thirteen slides, illustrating the "sunken coast" diatoma- 

 ceous deposits of New Jersey; from E. Thum, Leipzig, six slides 

 of diatoms from the Los Angeles earth and three vials of cleaned 

 material. 



The society's library was increased by a complete set of the 

 "• Proceedings of the American Microscopical Society," a com- 

 plete file oi \.\\<t Journal of the ^iickett Club to date, and Strass- 

 burger's •' Manual of Vegetable Histology," translated by A. B. 

 Hervev. 



R. H. Freund exhibited a beautifully stained preparation of 

 Ainceba protcus^ showing the granules very strongl3^ and also a 

 preparation of Spirogyra^ stained with methyl blue, in which 

 the nuclei were very marked. 



Dr. S. M. Mosgrove, of Urbana, Ohio, assistant secretary of 

 the American Society of Microscopists. was present as a visitor, 

 and gave an interesting account of the work of that larger so- 

 ciety. 



The lecture of the evening was by Dr. Gustav Eisen, on the 

 structure of Oligochceta^ or the minute angle-worms. The class 

 is divided into two extreme groups — land oligochaeta and water 

 oligochaeta. The former are the lowest developed, the latter the 

 highest. The water forms are characterized by having only two 

 longitudinal vessels, while the higher oligochtEta have three lon- 

 gitudinal bloodvessels. One intermediate group is called Ocne- 

 rodiclidce^ which shows characters of both groups. The internal 

 structures were shown to be highly differentiated, consisting of 

 all the various organs known in the highest animals, such as ali- 

 mentary canal, brain and central ganglion, kidneys and sexual 

 organs. These animals are hermaphrodites, and lay their eggs 

 in capsules or cocoons in the water. The blood is red and pul- 

 sating. Lately some very interesting and new forms have been 

 found on the Pacific Coast, which show their internal organs to 

 be quite different from those forms described at first. The gen- 

 era especially dwelt on were Ocnerodiclus^ Gordiodiclus^ and 

 Phoenicodiclus^ the first and last being Pacific Coast forms, 

 while the other is African and West Indian. The lecture was 

 illustrated by slides shown under high and low-power lenses. 



Lincoln (Nebr.) Microscope Club. — Roscoe Pound, Sec'y. 

 February 28^ i8gj. — The president's address was by Mr. 

 Woods, upon " Recent Advances in Microscopy." Mr. Dales 

 spoke on the Brownian movement, illustrating his paper with a 

 number of preparations. He showed that in old slides the move- 



