54 
NOTES AND MEMORANDA. 
TMonthly Microscopical 
L Journal, July 1, 1869. 
and until all these conditions are complied with, no title can appear 
in the programmes. 
Injecting Specimens for Microscopic Purposes. — Mr. T. Sharp 
sends us the following queries, to which we shall be glad to have the 
answer of our correspondents. Meanwhile, we append a brief reply. 
1st. How is the carmine fluid prepared ? 2nd. When a subject is in- 
jected, does it require any other preparation, such as hardening or 
shrinking with anything ; and, if so, with what ? 3rd. What is the 
best method of slicing such substances as injected brain, lung, &c. — 
Answers. (1) See Dr. Beale's ' How to Work with the Microscope.' 
(2) We ourselves simply place the tissue in glycerine with a minute 
proportion of carbolic acid. (3) Most persons prefer the razor. We 
(Ed.) always use Valentin's knife, and, from long practice, find it 
most convenient. 
Seeds of the Caryophyllacese. — Those who are engaged in examin- 
ation of seeds with the microscope, which is really a good field for 
work, will find a paper of some interest " On the Seeds of the Clove- 
Pink Family," in the June number of ' Science Gossip.' It contains 
about a dozen illustrations representing the seeds as magnified from 
20 to 40 diameters. 
Theonella or Dactylocalyx. — Two zoologists dispute about a 
sponge. Which will " throw it up ? " In the report of the meeting 
of the Zoological Society, May 27th, we read the following : — A com- 
munication was read from Dr. J. S. Bowerbank containing remarks on 
the Sponge, lately described by Dr. Gray in the Society's ' Proceed- 
ings ' under the name of Theonella swinhoei, which Dr. Bowerbank 
believed to be a species of Dadylocalyx, and identical with his 
D. Prattii. 
"Pond-life" Photographed— Mr. Slack is the historian of Pond- 
life ; but Mr. H, C. Eichter is unquestionably its portrait painter. 
We have before us a photograph taken from a drawing, and which is 
a veritable " study from life " of the organic world of the microscope. 
It is an oval picture (about 7 inches by 5) which portrays the types 
of the several forms of life seen under the microscope, and it is no less 
a chef-d'oeuvre of artistic excellence than of skilled zoological repre- 
sentation ; and while it depicts the various organisms with a minuteness 
of detail which only a patient student can realize, and has placed each 
element in its natural position, its tout-ensemble conveys a notion of 
grace and truth. The subjoined list of the species included in this 
picture gives some idea of its high scientific value : — 
1. Stephanoceros Eichornii : Crown animalcule (Eotifer). 2. The 
same ; retracted into its gelatinous tube. 3. Melicer taring ens (Eotifer). 
4. The same ; another view. 5. The same ; partly retracted. 6. The 
same ; young with gelatinous tube. 7. Floscularia ornata (Eotifer). 
8. The same ; an old specimen. 9. The same ; retracted into its 
tube. 10. Botifer vulgaris ; swimming freely. 11. The same ; crawl- 
ing along. 12. Dinocharis tetractis (Eotifer). 13. Petrodina patina 
(Eotifer). 14. (Ecistes longicornis (Davis), new species (Eotifer). 
15. Macrobiotus Hufelandii. Water bears (Tardigrada). 16. Cantho- 
camptus miniitus (Entomostracan). 17. Cothurnia imberbis (Infusorial). 
