SACE TS 
572 General Notes. [August, 
Ross at Victoria Harbor in 1832. (3.). Capt. Hall, in 1868, was 
within thirty miles of the reported position of the cairn, but 
heard nothing of it. 
MICROSCOPY. ! 
MicroscopicaAL Section, Troy SCIENTIFIC ASSOCIATION.—A 
regular meeting of this Society was held on Monday evening, 
May 6th, the Chairman, Dr. R. H. Ward, in the chair. 
Dr. Ward gave a discussion of some recent experiments in 
microscopic ruling, an account of which will be published shortly. 
Rev. A. B. Hervey, Vice-Chairman of the Section, gave a very 
clear summary of the classification of alga by means of fructifi- 
cation, and illustrated the six principal groups into which the Red 
sea-weeds are divided by the following preparations: No. |, 
Ceramium rubrum Ag., showing in its various stages of develop- 
ment, the fruit produced by the simple subdivision of the cell- 
contents of a fructified mother-cell; No. 2, Callophyllis Parimat 
a 
developed, filling the cystocarp with a mass of sub-angular spores, 
all the cells of a given spore-thread appearing to develop simul- 
taneously, but some of the threads in these sections, not having 
been fecundated and developed, appearing in their ori iginal state and 
form; No. 4, Curdiea laciniata Harvey, showing characteristic 
fruit of the series where a mass of fine, closely packed, moniliform 
“spore threads,” arising from a basal placenta, form the spores by 
e successive ripening and falling off of the end cells of the 
fecundated threads; No. 5, Gelidium cartilagineum Grev., 
illustrating the series having an immersed cystocarp, a pla- 
centa central as in this species or more frequently basal or 
eet and club-shaped spores developed at the end of very 
short spore threads; and No. 6, Polysiphonia fibrillosa Grev., hav- 
ing the cystocarp external and somewhat aigh y developed, and 
-~ the spores large and club-shaped. The specimens were mounted 
= in sea-water and glycerine, by the TA EE method Seeche 
in the May number of the NATURALIST, and showed the typical 
 fructification of the different series with great distinctness. After 
_ study and discussion by the section, the . series of slides was ten- 
a dered as a special box to the “ Postal Club.” 
__A regular meeting was held Monday evening, June 3d, Dr. 
Nard in the chair. The chairman presented a box of slides pre- 
pared for the section by Mr. C. C. Merriman, of Rochester, CoP Me 
This ¢ incom is edited tby PER >, WARD, A N. Y. 
ding member. The slides were mainly the result. of Mr. 
