SELECTED NOTES. 389 



final developments of this creature, beyond that it is a " Dipterous 

 Insect," and from some of our members I hope to learn something 

 as to the "latter end" of this interesting organism. J. Halsey. 



To cut Cells in Glass Slips. -This may be done as follows :— 

 A hole is bored through the glass very easily with a piece of copper 

 tube running in a lathe. The tube must be charged with emery 

 powder and oil. A thin cover glass is then cemented on with gold 

 size— ordinary gum may be used for this purpose, and answers the 

 purpose very well. I often confine a live insect in this way, and 

 view it on both sides with a Leiberkuhn or a side reflector. In 

 this case I fasten the cover on very slightly with gum ; after full 

 inspection I usually give the insect its liberty again. Most 

 insects possess a beauty when viewed alive that they lose after 

 d^^th. Jas. Mackenzie. 



Cysticercus pisiformis.— A parasite from the intestine of rab- 

 bit. Cysticercus appears to be a rudimentary form of Tcenia, 

 which attains perfect development in the alimentary canal of its 

 host. No organs of sense except touch ; no eyes. A difference 

 of opinion exists as to evidence of digestive and circulatory 

 systems, the mouth is usually distinct. R. Peach. 



This is probably the cystic form of Tcenia serrata, the intestinal 

 worm of the dog and fox. Vide Huxley's Anatomy of the Inverte- 

 brates, pp. 209—211 ; and Rolleston's For 7ns of Animal Life, p. 

 136, amongst readily accessible books. H. Pocklington. 



Section of Cacao-Bean, or rather a part of one of the lobes, 

 known as a " nib." The seeds, or beans, are enclosed in a pod, 

 about six inches long by four broad, and are arranged in rows, 

 often five rows of six beans each, round a central axis, or stalk 

 within the pod. The seed when shelled is found to consist of 

 several lobes of angular form, and irregular in shape and size, 

 which break up into " nibs." The lobes consist of innumerable 

 minute cells, roundish, the spaces of which are loaded with grains 

 of starch and fatty matter. 



A half inch o.g. will show very distinctly the starch and fat 

 cells. I am particularly struck with the arrangement of the starch 

 cells. These do not appear to be spread about through the mass, 

 but to be arranged in rows parallel with the surfaces of the lobes, 



International Journal of Microscopy and Natural Science. 

 Third Series. Vol. VII. bb 



