QUARTERLY CHRONICLE OF MICROSCOPICAL 
SCIENCE. 
GERMANY.—Kolliker’s und Siebold’s Zeitschrift. No. 1, 
1866.—The first part of the sixteenth volume of this most 
satisfactory journal appeared in March. It contains the 
following papers: 
1. “ Researches on Connective Tissue and its Ossification,” 
a valuable paper by Dr. Leonard Landois, which may be 
compared with Dr. Waldeyer’s essay on ossification in Max 
Schultze’s ‘ Archiv.’ 
2. “Larval Eyes (Ocelli compositi, mihi) ,” by Dr. Hermann 
Landois.—Malpighi was the first anatomist who recognised 
these eyes, of which he speaks in his essay on the silkworm. 
Dr. Landois here goes thoroughly into their structure and 
form in various insects, treating of them under the following 
heads :—1. The situation of the eyes. 2. The larval eye. 
3. The cornea. 4. The lenses. 5. Theiris. 6. The so-called 
crystalline body. 7. The envelopes. 8. The muscles of the 
larval eye. 9. The two enveloping membranes. 10. The 
optic nerve. 11. The trachez of the eye. 12. The innerva- 
tion of the eye. 13. Morphological and physiological remarks. 
14. Comparison of the larval eye with the facetted eye. 
+ 3. “The Metamorphoses of Corethra plumicornis,’ by 
Dr. August Weismann.—This is one of those able memoirs 
on insect anatomy for which the Professor of Zoology at 
Freiburg is so well known. The Corethra-larva has already 
furnished anatomists with interesting facts relative to the 
natural history of the Diptera, its excessive transparency and 
abundance rendering it a ready object for study. Dr. Franz 
Leydig some few years since published some observations 
made on these larve, in which he demonstrated the relations 
of the tegumentary hairs to the nervous system, and gave 
other important details of structure. Dr. Weismann’s paper 
is a most extensive essay, illustrated by five large and care- 
fully executed plates. He commences with a very detailed 
description of the various organs of the larva, and then traces 
