The Mickoscope. 373 



turer, while preparing a list of the diatoms found. These diatoms 

 have been beautifully illustrated by exquisite engravings in the 

 Quicket Microscopical Club Journal, of London. Many of these 

 new and rare forms were discovered here before they were described 

 in Europe. 



The following are the names of the diatoms exhibited, and of 

 which Mr. Christian has duplicated slides of the rare forms, viz: 



Navicula sparsi punctata, N. interlineata, Biddulphia elabor- 

 ata, B. damanuensis, B. virgata, B. punctata, B. reversa, Ceratan- 

 lus subangulatus, Triceratum foseinoides, T. kinkerianum, T. ven- 

 ulosum var. major, T. dobreeanum var. nova Zeelandica, T. 

 cancellatum, T. spinosum, T. capitalum, T. parallum , T. farvus var. 

 quadrata; also, T. F. maxima, T. arcticum, quadrangular form, T. 

 intermedium, T. lineatum, T. crenulatum, T. morlandii, Eunolo- 

 gramma Weissii; also, two forms E. not yet described; Aulacodis- 

 cus cellulosus, A. S. var. nova Zealxndica, A. notatus, Auliscus 

 oamaraensis, Actinoptychus vulgaris var. inaculata, Hermialus 

 ornithocephalus, Biddulphia vittata, Aulacodiscus garuschii, A. 

 rattragii, A. elegans, A. Huttonii, A. rodiosvs monopsia mammosa, 

 Pycilla reticulata, Actinoptichus elegantatus, A. var. tenera, Tun- 

 acira similacrum, Melosira omamensis. 



The meeting, in appreciation of the highly interesting lecture 

 and exhibit of Mr. Christian, expressed thanks in an appropriate 

 resolution, acknowledging the high attainments of Mr. Christian as a 

 scientist on the broad field of microscopy, and one who, in his spe- 

 cialty as diatomist, ranks among the most distinguished authorities 

 in this branch, on this continent. 



G. A. Peple, 



Secretary. 



AMERICAN POSTAL MICROSCOPICAL CLUB. 



BOX E^ is one of great interest to physicians. Slide No 3 con- 

 tains a large number of finely mounted " feather crystals " of 

 uric acid abstracted from the blood of the caterpillar just going into 

 the pupa state. The slide was prepared by Prof. Samuel Lockwood, 

 of Freehold, N. J., and the modus operandi is thus explained: 



" Owing to the large amount of chlorophyll consumed in the 

 flood, the blood of the lepidoptera larvae is of greenish color. Hav- 

 ing got an adult caterpillar, that is, one that is just going into the 

 pupa state, take at least six chemically cleaned glass slips, puncture 

 the caterpillar on one side and put a drop of the green fluid on 



