INDEX. 



On the range of applicability of certain moditi- 



cations of the Weigert-Pal process, rev., 446. 

 On the structure of brain cells and their de- 

 generation in general diseases, rev., 487. 

 Oozes, foraminiferal, evidence of in the vSouth 



Pacific, 584. 

 Orcein, Unna's modified method, 583. 

 Organs de remplacement chez les plantes, 



recherches sur les, rev., 370. 

 Orientirung kliener mikroscopischen Objecte, 



rev., 402. 

 Orientirung kleiner Objecte beim Zerlegen im 



Schnitte, eine Methode zur, rev., 613. 

 Orthoclase as gangue mineral in a fissure vein, 



rev., 485. 

 Outline for a study of the butterfly, 247. 

 Ovarian ova of the hedgehog, note on, rev., 



444. 

 Papers read at the meeting of the affiliated 



scientific societies, titles of, 258. 

 Paraffin blocks, instrument for squaring, rev., 



611. 

 Paraffin imbedding, a rapid method of, 229. 

 Paraffin method, the, in hot weather, 588. 

 Paraffin sections, cutting of, 335, 

 Pasteur-Chamberland filter, simple apparatus 



for filtering through, 554. 

 Pathology of the Pacinian corpuscle, rev., 527. 

 Peckiness, a disease of Jaxodium, also a 



similiar disease of Libocednis decurrens, rev., 



513- 



Pedagogical museum at the University of 

 Texas, 397. 



Perforated porcelain swimming cup for wash- 

 ing out specimens, 349. 



Periclase, Ind. Sp., 620. 



Peripheral distribution of the cranial nerves of 

 Ammocoetes, 445. 



Permanent mounts of pollen, 341. 



Petrotome, or rock-slicing machine, notice, 484. 



Phseophyceas, to prepare for microscopical 

 study, 544. 



Phasosporeen, die geschlechtliche fortplanzung 

 der eigentlichen, rev., 344. 



Phosphotungstic acid hsematoxylin, 583. 



Photographer's gun cotton for making collo- 

 dion, 325. 



Photographic and microscopical section of 

 Franklin fnstitute, 383. 



Photographic plate, action of bacteria on, 

 rev., 377. 



Phycomycetes, methods for study, 547. 



Physiological section of the British Associa- 

 tion, address of the president, rev., 617. 



Physiologischen f njection der Blut und Lymph- 

 gefasse, liber meine Methode der, rev., 447. 



Picric acid, 366. 



Picric acid arid acid fuchsin (Van Gieson's 

 stain), 584. 



For connective tissue. 

 For the nervous system. 



Picric acid and Delafield's haematoxylin, 288. 



Picro-anilin-blue for nerve tissue, 285. 



Picro-carmine and alum-carmine as counter- 

 stains, 381. 



Picro-carmine with hasmatoxylin for differen- 

 tiation of epithelial elements, 286. 



Pigmentbildung in den Schmetterlingsfiiigeln, 

 fiber die, rev., 475. 



Pigment formation, in Mytelus, rev., 404. 

 Pigments, green, in invertebrates, rev., 313. 

 Pilzen, iiber das Eindringen in Kalkgesteine 



und Knochen, rev., 398. 

 Pinus sylvestris, on the cytological features of 



fertilization and related phenomena in, rev., 



310. 

 Plague serum, report on preparation of, rev., 409. 

 Planaria maculata, experimental studies of the 



regeneration of, rev., 314. 

 Planktologische mittheilungen, rev., 373. 

 Plankton method, some important sources of 



error in, rev., 348. 

 Planktonsucher for observations under water, 



374- 

 Plan of the botanical laboratories, Duluth 



High School, 354. 

 Plans for biological tables in different Ameri- 

 can institutions, 326. 

 Plant histology, methods in : 



f . Laboratory appliances, 296. 

 II. The general method, 332. 



III. Killing and fixing agents, 363. 



IV. Staining, 3S9. 



V. General remarks on staining, 437. 

 VI. The celloidin method, 468. 

 VII. The study of algce, 507. 

 VIII. AlgiE ancl fungi, 543. 

 IX. Fungi, 593. 

 X. Bryophyta, 634. 



Plant tissues, to imbed in paraffin, 227. 



Plasmazellen, Beitrage zur Lehre von den, 

 rev., 352. 



Platinum method for the central nervous sys- 

 tem, rev., 414. 



Podophyllum, or may-apple, root-tips of, for 

 demonstrating karyokinesis, 325. 



Polariscope and bacterial cultures, 277. 



Pollen grain of Cycas revoluta, structure of, 

 rev., 253. 



Pollen mother-cells of Cobea scandens, obser- 

 vations on the development of the karyoKi- 

 netic spindle in, rev., 252. 



Pollen, permanent monnts of, 341. 



Polysiphonia, to stain and mount, 546. 



Possible function of the nucleolus in heredity, 

 rev., 472. 



Postembryonale Entwicklung der querge - 

 streiten muskeln von weissen Ratten, 282. 



Powellite crystals, Ind. Sp., 620. 



Preparation and mounting of wood sections, 

 461. 



Preparation of culture media, note on the, 632. 



Preparation of drawings for reproduction, 

 rules for, 342. 



Preparation of ground sections of teeth and 

 bone, 292. 



Preparation of nucleated blood in bulk, 231. 



Preparing foraminiferal material for study, 228. 



Preparing sections of cochlea for microscopi- 

 cal examination, 435. 



Preservation of culture media, rev., 615. 



Preservative for botanical specimens, formalin, 



537- 

 Primitive fibrils, role of, in degeneration, rev., 



485. 

 Propagation of diseases by means of insects, 



with special consideration of the common 



domestic types, rev., 614. 



