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The Ticker, October 17, 1961 Oct 1961

The Ticker, October 17, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, October 10, 1961 Oct 1961

The Ticker, October 10, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Communicator, October, 1961, Bronx Community College Oct 1961

The Communicator, October, 1961, Bronx Community College

The Communicator

The Communicator newspaper published in October, 1961.


Fine Structure Of The Spermatozoon Of Hydroides Hexagonus (Annelida), With Special Reference To The Acrosomal Region, Arthur L. Colwin, Laura Hunter Colwin Jun 1961

Fine Structure Of The Spermatozoon Of Hydroides Hexagonus (Annelida), With Special Reference To The Acrosomal Region, Arthur L. Colwin, Laura Hunter Colwin

Publications and Research

This paper describes in some detail the structure of the acrosomal region of the spermatozoon of Hydroides as a basis for subsequent papers which will deal with the structural changes which this region undergoes during fertilization. The material was osmium-fixed and mild centrifugation was used to aggregate the spermatozoa from collection to final embedding. The studies concern also the acrosomal regions of frozen-thawed sperm prepared by a method which previously had yielded extracts with egg membrane lytic activity. The plasma membrane closely envelops four readily recognizable regions of the spermatozoon: acrosomal, nuclear, mitochondrial, and flagellar. The acrosome consists of an …


Changes In The Spermatozoon During Fertilization In Hydroides Hexagonus (Annelida): Ii. Incorporation With The Egg, Arthur L. Colwin, Laura Hunter Colwin Jun 1961

Changes In The Spermatozoon During Fertilization In Hydroides Hexagonus (Annelida): Ii. Incorporation With The Egg, Arthur L. Colwin, Laura Hunter Colwin

Publications and Research

This, the last of a series of three papers, deals with the final events which lead to the incorporation of the spermatozoon with the egg. The material used consisted of moderately polyspermic eggs of Hydroides hexagonus, osmium-fixed at various times up to five minutes after insemination. The first direct contact of sperm head with egg proper is by means of the acrosomal tubules. These deeply indent the egg plasma membrane, and consequently at the apex of the sperm head the surfaces of the two gametes become interdigitated. But at first the sperm and egg plasma membranes maintain their identity and …


Changes In The Spermatozoon During Fertilization In Hydroides Hexagonus (Annelida): I. Passage Of The Acrosomal Region Through The Vitelline Membrane, Laura Hunter Colwin, Arthur L. Colwin Jun 1961

Changes In The Spermatozoon During Fertilization In Hydroides Hexagonus (Annelida): I. Passage Of The Acrosomal Region Through The Vitelline Membrane, Laura Hunter Colwin, Arthur L. Colwin

Publications and Research

In the previous paper the structure of the acrosomal region of the spermatozoon was described. The present paper describes the changes which this region undergoes during passage through the vitelline membrane. The material used consisted of moderately polyspermic eggs of Hydroides hexagonus, osmium-fixed usually 9 seconds after insemination. There are essentially four major changes in the acrosome during passage of the sperm head through the vitelline membrane. First, the acrosome breaks open apically by a kind of dehiscence which results in the formation of a well defined orifice. Around the lips of the orifice the edges of the plasma and …


The Ticker, May 11, 1961 May 1961

The Ticker, May 11, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, April 18, 1961 Apr 1961

The Ticker, April 18, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Reporter, April 18, 1961 Apr 1961

The Reporter, April 18, 1961

The Reporter

The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.


The Ticker, April 11, 1961 Apr 1961

The Ticker, April 11, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Reporter, April 11, 1961 Apr 1961

The Reporter, April 11, 1961

The Reporter

The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.


The Communicator, April, 1961, Bronx Community College Apr 1961

The Communicator, April, 1961, Bronx Community College

The Communicator

The Communicator newspaper published in April, 1960.


The Ticker, March 21, 1961 Mar 1961

The Ticker, March 21, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Reporter, March 7, 1961 Mar 1961

The Reporter, March 7, 1961

The Reporter

The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.


The Ticker, February 28, 1961 Feb 1961

The Ticker, February 28, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, February 14, 1961 Feb 1961

The Ticker, February 14, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, February 7, 1961 Feb 1961

The Ticker, February 7, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Reporter, January 24, 1961 Jan 1961

The Reporter, January 24, 1961

The Reporter

The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.


The Ticker, January 4, 1961 Jan 1961

The Ticker, January 4, 1961

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, November 22, 1960 Nov 1960

The Ticker, November 22, 1960

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, September 27, 1960 Sep 1960

The Ticker, September 27, 1960

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, September 19, 1960 Sep 1960

The Ticker, September 19, 1960

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, April 26, 1960 Apr 1960

The Ticker, April 26, 1960

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Communicator, April 23, 1960, Bronx Community College Apr 1960

The Communicator, April 23, 1960, Bronx Community College

The Communicator

The Communicator newspaper published on April 23, 1960.


The Ticker, March 22, 1960 Mar 1960

The Ticker, March 22, 1960

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, March 8, 1960 Mar 1960

The Ticker, March 8, 1960

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, November 23, 1959 Nov 1959

The Ticker, November 23, 1959

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Ticker, November 17, 1959 Nov 1959

The Ticker, November 17, 1959

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.


The Reporter, October 6, 1959 Oct 1959

The Reporter, October 6, 1959

The Reporter

The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.


The Ticker, September 29, 1959 Sep 1959

The Ticker, September 29, 1959

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.