On the Structure and Development of the Cysticercus cellulosae, as Found in the Pig, by George Rainey

by Schwann. For by the most careful examination of these organs both recent & after the application of acids, I have not been able to distinguish any thing which can be looked upon as a cell or cell nucleus cal= culated to give the idea of their being de= veloped from cells, or independence of cells according to the theory of that physiologist, but on the contrary all the various forms & characters which they present during the process of their formation simply in= dicate the coalescence of very minute spherules of an homogeneous material, exceeding many times the number of a complete set of hooklets, into small globular masses, & these again into larger ones, & so on suc= cessively, until a recognisable portion of a hooklet comes into view, which coal= escing with other parts similarly formed, builds up as it were an entire organ. It is worthy of remark that if these structures had been produced directly from the metamorphosis of previously existing cells, the circumstances connected with their for= mation would have been the most favoura= ble for observing both the original cells & the changes which they passed through; indeed, so much so, that it is almost im= possible that they should have escaped notice. First, because these parts are of such a size & degree of transparency as to admit of examination with the highest powers of the microscope without the necessity of disarranging
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Manuscript details
- Author
- George Rainey
- Reference
- PT/56/8
- Series
- PT
- Date
- 1857
- IIIF
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Cite as
On the Structure and Development of the Cysticercus cellulosae, as Found in the Pig, by George Rainey, 1857. From The Royal Society, PT/56/8
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